what is a trigonometrical complex number

Answers

Answer 1

A complex number z = a + bi has the trigonometric form z = r(cosθ + I sinθ ), where r = |a + bi| is z's modulus and tanθ = b.

the angle generated by the complex number on a polar graph having one real axis and one imaginary axis. This may be calculated using the right angle trigonometry for the trigonometric functions. Complex numbers are those that are represented as a+ib, where a and b are actual numbers and I is a fictitious number termed a "iota." I has the value (-1). As an illustration, the complex number 2+3i is made up of the real number 2 (Re) and the imaginary number 3i (Im).

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Related Questions

a box with a square base and open top must have a volume of 42592 c m 3 . we wish to find the dimensions of the box that minimize the amount of material used. first, find a formula for the surface area of the box in terms of only x , the length of one side of the square base. [hint: use the volume formula to express the height of the box in terms of x .] simplify your formula as much as possible. wyzant

Answers

a formula for the surface area of the box in terms of only x , the length of one side of the square base is A =  x² + 170368 cm³/x

The volume of the box with square base is V = x²h where x = length of side of square base and h = height of box.

Now, the area of the of box open at the top with dimensions of length, l , width, w and height, h are

A = 2lh + lw + 2wh

Now for a box of square base, l = w = x.

So, A = 2xh + x² + 2xh

A = x² + 4xh

Since V = x²h and V = 42592 cm³,

h = V/x² = 42592/x²

substituting h into A, we have

A =   x² + 4xh

A =  x² + 4x(42592 cm³/x²)

A =  x² + 4 × 42592 cm³/x

A =  x² + 170368 cm³/x

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1/2 + 1/4= write as a fraction and as a decimal.

Answers

1/2 + 1/4 =

2/4 + 1/4 = = 3/4 = 0.75

help me if you answer your smartest person on the world

Answers

The value that makes the inequality true for the first inequality is x < 4 and x >4 for the second inequality

Find the unknown value in the Inequality

To solve this problem, we have to solve each of the inequality and find the missing values that holds them true.

For the first inequality,

Let x represent the unknown value

[tex]8 * \frac{x}{4} < 8\\\frac{8x}{4} < 8\\x < 4[/tex]

For the second inequality;

Let x represents the unknown value.

[tex]8 * \frac{x}{4} > 8\\ x > 4[/tex]

In the first inequality, x < 4 and the second inequality, x > 4.

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Which of the following correctly sets up the synthetic division for x^3 − 4x^2 − 3 divided by x + 1?

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let's recall that for a synthetic division, or even a long division as well, the dividend and divisor must be in descending order from left-to-right.  Check the picture below.

The exact volume of a cylinder with radius 3 cm and height 6 cm is:

Answers

The answer is 169.65


The volume of this cylinder is 2,000.18 cubic yards. What is the radius?
Use 3.14 and round your answer to the nearest hundredth.

Answers

Answer:56.52

Step-by-step explanation:

63 = 3x + 15 solve for x simplify your answer as much as possible

Answers

Answer:

The answer is x=16

Step-by-step explanation:

63=3x+15

63-15=3x     Put like terms together and subtract

48=3x          

x=48/3        isolate the variable

x=16

Rewrite it first try doing
3x + 15 = 63
Then combine your like terms since you only have one x variable you dont do anything to it, but you have two numbers without variables 15 and 63 you do the opposite of +15 which is -15 to 63 so 63-15 which equals 48 then you will divide 48/3 which will give you then answer of x = 16

48 < 8w solve the inequality for w and simplify your answer as much as possible

Answers

Answer:

w > 6

Step-by-step explanation:

48 < 8w

48 ÷ 8 < w

w > 6

I switched the sign if you dont want that you can write 6 < w

Hi I have question on solving algebraic fractions. How would I find the LCD for this?

(x/x+1)+(x-1/4)=(11/12)

I tried multiplying the denominator by the opposites (x+1 and 4) to make them the same denominator and then add them and cross multiply, however, I never got the right answer

Answers

The value of x is either 2 or -7/3.

Given expression:-

(x/x+1)+((x-1)/4)=(11/12)

We have to find the value of x.

The LCM of (x + 1) and 4 is 4(x - 1).

We can write,

[4x + (x + 1)(x - 1)]/4(x + 1) = 11/12

[tex]\frac{4x+x^2-1}{4(x+1)}=\frac{11}{12}[/tex]

We can multiply 4 to the given equation, and get,

[tex]\frac{4x+x^2-1}{(x+1)}=\frac{11}{3}[/tex]

By cross multiplying, we can write,

[tex]12(4x+x^2-1)=11(4(x+1))[/tex]

12x + [tex]3x^2[/tex] -3 = 11x + 11

[tex]3x^2[/tex] + 12x - 11x -3-11 = 0

[tex]3x^2[/tex] + x-14 = 0

Using the middle-term split theorem, we can write,

[tex]3x^2[/tex] + 7x - 6x -14 = 0

x(3x + 7) - 2(3x + 7) = 0

(3x + 7)(x - 2) = 0

x = -7/3, 2.

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(30p algebra 2) is this an observational study or an experiment? and why

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The sales director is conducting a experiment study.

There are different types of studies related to researches. The researchers may conduct simply, a survey, more thoroughly, an observational study or an experiment to get more details of things of their research.

An observational study is based on observations and analysis of different comparable situations. A survey is actually a method to study about things directly through personally involving into the situations.

Experiments are mostly used in situations which asks for a solution to certain issue. An experiment is implementing new measures first and then check if it works and get on conclusions about it. Such experiments leads to new inventions.

So here, the sales director conducted an additional training program for the sales representatives to increase the sales in Midwest and Northeast regions.

Then he studied the effectiveness of this implementation by comparing the sales from trained and non-trained representatives.

Thus the sales director conducted an experiment based study here.

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Find the HCF of 200 and 240

Answers

Answer:

its 40

Step-by-step explanation:

200 and 240 have an HCF of 40.

Finding all common factors between two numbers and choosing the biggest one yields the highest common factor (HCF).

So, let's determine factors of 200

1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, and 200 are all factors of 200.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, and 240 they are all factors of 240.

now, we will select the highest common factors of 200 and 240.

the highest common factors of 200 and 240 is 40.

Hence, the HCF of 200 and 240 is 40.

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Write an equation that represents the line.
Use exact
numbers.

Answers

Answer:

y = -1/3x -3.5

Step-by-step explanation:

line interesects y axis at -3.5, distance between dots is down 1 and forward 3

ii) (1, 3), (6,3), (6, 6) and (1, 6) are the vertices of a rectangle.

Answers

Given, (1, 3), (6,3), (6, 6) and (1, 6) are the vertices of a rectangle, the width is 1 unit shorter.

What is a rectangle?

A rectangle is a quadrilateral with the four right angles in the Euclidean plane. It can alternatively be described as a parallelogram with a right angle or an equiangular quadrilateral, where equiangular denotes that all of its angles are equal (360°/4 = 90°). A square is a rectangle with the four equally long sides. Oblong is occasionally used to describe a rectangle that isn't square. Rectanglen is the symbol for a rectangle having the vertices ABCD. ABCD in PNG.

Rectangulus, a combination of rectus (as an adjective, right, proper), and angulus, is the source of the English word rectangle (angle).

A crossed rectangle is a quadrilateral that is formed by the intersection of two diagonals and the two opposite sides of a rectangle (therefore only two sides are parallel). Although opposite angles are equal, it is a specific example of an antiparallelogram in which the angles are not all right angles and equal. There exist so-called rectangles in other geometries, including spherical, elliptic, and hyperbolic ones, with opposite sides of equal length and equal angles that are not right angles.

Many tiling issues use rectangles, like tiling the plane with rectangles or tiling a rectangle with polygons.

By plotting given points in the coordinate plane,

We get rectangle ABCD having vertices,

A(-1,6), B (3,6), C (3,1), D (-1,1)

By distance formula,

Shorter side or width of rectangle,

AB= [tex]\sqrt{ [3-(-1)]^{2}+ (6-6)^{2}} = \sqrt{4^{2}+0 } = 4 units[/tex]

Longer side or length of rectangle,

BC= [tex]\sqrt{(3-3)^{2}+(1-6)^{2}}=\sqrt{5^{2} } = 5 units[/tex]

The difference between length and width,

BC-AB= 5-4= 1units

Hence, width of rectangle is 1 unit less than the length.

active attachment

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Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

model2 is times and model on is 432

It's possible to build a triangle with side lengths of 3, 3, and 9.
O A. True
O B. False

Answers

it is possible to make a triangle with the sides 3, 3 and 9

true

Which of the following is not a step in the help seeking process

Answers

tell others about the help you received

Sarah invests £400 at 3%
interest for 6 years
Circle the correct calculation to
work out how much she has now.

Answers

Answer: £900

Step-by-step explanation:

Can some one PLEASE HELP me , I do not understand how to do this at all and I have to submit it TONIGHT please and thankyou!

Answers

Answer:

Answer down below!

Step-by-step explanation:

Let's find a point on the graph that we can start off on

We can use (2,-1)

From there, we can use rise/run to find our answer

We go up 3 and over -2

So, our slope is -3/2 because we cannot simply it any further

Guys I need help is this right?​

Answers

The domain of the function in this situation as required in the task content is; Choice C; {0, 1, 2, 3, 4, 5, 6}

What is the domain of the function for this situation?

It follows from the task content that the domain of the function described by the situation is to be determined.

Since the domain is the set of all possible input values, otherwise termed the independent variable, x.

It follows that since the carton can hold from 0 to 6 books; the domain is; Choice C ; {0, 1, 2, 3, 4, 5, 6}

Please Note: The set of all possible output values of a function, otherwise termed the dependent variable, y is called the Range.

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PLEASE HELP!!!!!! It’s algebra

Answers

Answer:

Y=3X-4

Step-by-step explanation:

1. Find the slope using matching (x,y) values. (5,11) and (2,2) for example. (Change in Y)/(Change in X) [tex]\frac{11-2}{5-2}[/tex] = [tex]\frac{9}{3}[/tex] = 3

2. Use the point-slope form to find the equation. Pick a matching (x,y) value. (2,2) for example. and plug it in for Y₁ and X₁ in the equation Y-Y₁=M(X-X₁)

with M as the slope. Y-2=3(X-2).

3. Simplify

Y-2=3X-6

Y=3X-4

Select the correct answer. Consider the function f(x) = 3x and the function g, which is shown below. How will the graph of g differ from the graph of f? A. The graph of g is the graph of f shifted 2 units up. B. The graph of g is the graph of f shifted 2 units to the left. C. The graph of g is the graph of f shifted 2 units to the right. D. The graph of g is the graph of f shifted 2 units down.

Answers

The graph of g will differ from the graph of f as the graph of g is the graph of f shifted 2 units to the right. Option C

This is further explained below.

What is a function?

A relation between a collection of inputs and one output for each of those inputs is the definition of a function.

A function is a connection between inputs in which each input is associated with precisely one output.

To put it another way, a function is a relationship between inputs. Each function has both a domain and a codomain or range that it operates inside.

Generally, The progression towards

g(x) = f(x -h) +k

depicts a translation with k units added on top and h units added to the right.

Since you have h equal to 0 and k equal to -2, this means that the graph is moved 0 units to the right and 2 units in the opposite direction of up.

The graph of g may be found by shifting f's graph down by two units.

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Calvin has three alarm clocks which sound at different intervals. Clock A goes off every 10 minutes, clock B every 15 minutes, and clock C every 20 minutes.The three clocks sound together every _minutes.

Answers

Answer:

Given that,

Calvin has three alarm clocks which sound at different intervals.

Clock A goes off every 10 minutes

Clock B every 15 minutes

Clock C every 20 minutes.

To find: the three clocks sound together every _minutes

The three clock sounds together for every least common minutes of the 3 clocks (A,B,C)

To find LCM of 10,15,20.

we get,

LCM of 10,15,20 is 60

Therefore we get that,

The three clock sounds together for every 60 minutes.

Answer is:

The three clock sounds together for every 60 minutes.

What is the domain and range of this function?​

Answers

Answer:

Domain(X-value): {-5,-4,-3,-2,-1,0,1,2,3,4,5}

Range (Y-value): {-2,-1,0,1,2}

Step-by-step explanation:

The domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.

SOMEONE PLEASE HELP ITS URGENT!!! Please help with this

Answers

Answer:

X = 8?

Step-by-step explanation:

I'm not sure if I'm correct but I used this solution of since 4x + 1.

Usually if its + something then you subtract it so 33-1 is 32 then

4x= 32

x=8

If I'm wrong, I apologise.

3.123=9.369.1/3 is is true or false

Answers

This answer is false

20=5x+10y help me please

Answers

Answer:x=2(-y+2)

Step-by-step explanation:easy

2- x+2/x-3 - x-6/x+3

A=
B=

It can be written in the form is like ax+b/x^2-9
so we only need the A and B.

Please reply to this ASAP

Answers

Step-by-step explanation:

so, if I understand your text correctly, we need to bring

2 - (x+2)/(x-3) - (x-6)/(x+3)

into a form

(ax + b)/(x² - 9)

what we notice immediately is

(x+3)(x-3) = x² - 9

that makes sense, as we want to transform all terms into fractions with the same denominator.

and the necessary "criss-cross" multiplication leads to (x² -9) as denominator.

so, let's transform every term to a fraction with that denominator, and then we add or subtract them all up as per the original expression.

2 :

multiply by (x²-9)/(x²-9)

2(x²-9)/(x²-9) = (2x²-18)/(x²-9)

(x+2)/(x-3) :

multiply by (x+3)/(x+3)

(x+2)(x+3)/(x²-9) = (x²+3x+2x+6)/(x²-9) =

= (x²+5x+6)/(x²-9)

(x-6)/(x+3) :

multiply by (x-3)/(x-3)

(x-6)(x-3)/(x²-9) = (x²-3x-6x+18)/(x²-9) =

= (x²-9x+18)/(x²-9)

for the whole expression we get then

(2x²-18)/(x²-9) - (x²+5x+6)/(x²-9) - (x²-9x+18)/(x²-9) =

= (2x²-x²-x² -5x+9x -18-6-18)/(x²-9) =

= ( 0 + 4x - 42 )/(x²-9)

a = 4

b = -42

48x4 and 44x5 Find the GCF

Answers

The greatest common factor (GCF) of the given expression 48x^4 and 44x^5 is  4x^4.

What is Greatest common factor?

Greatest common factor, as the name implies, is greatest among all common factors among the quantities given. We can factorize the quantities in smallest relative factors possible (one level of factors over which all quantities can form themselves), and collect as many common factors as we could. Those will together compose GCF(Greatest common factor).

To find the GCF of [tex]48x^4[/tex] and [tex]44x^5[/tex]. we have to write the prime factorization of both the terms;

Prime Factorization of   [tex]48x^4[/tex]= 2 × 2 × 2 × 2 × 2 × 2 × x × x × x× x

Prime factorization of  [tex]44x^5[/tex] = 2 × 2 × 11  × x × x × x × x × x

Thus the common factors are 2 × 2x × x × x× x

Therefore The greatest common factor (GCF) of the given expression 48x^4 and 44x^5 is  4x^4.

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What is the slope of a line perpendicular to the line whose equation is 3x + 6y = –72. Fully reduced

Answers

The slope of the line is 2 for the equation that is perpendicular.

Slope of the line:

Slope of the line refers the change in y coordinate with respect to the change in x coordinate.

Given,

Here we have the equation 3x + 6y = - 72 that is perpendicular to the line.

Now, we need to find the slope of the line from it.

First we have to convert the given equation of line into standard form,

Then we get,

3x + 6y + 72 = 0

Now we know that the slope of the line for this type of equation is,

m = -a/b

Whlie we compare the equation with the standard form ax + by + c = 0,

Then we get the value of a = 3 and b = 6

Therefore, the slope of the line is

m1 = -3/6

m1 =-1/2

Here we need to find the slope of a line which is perpendicular to the given line.

Through the definition we know that product of two perpendicular line is -1.

So,

m1 x m2 = -1

(-1/2) x m2 = -1

m2 = 2

Therefore, the slope of perpendicular line is 2

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what is the slope of the line?

Answers

Answer:

3

Step-by-step explanation:

Use the slope formula

y2-y1/x2-x1

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