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exis [7]
3 years ago
15

Convert 4(cos(150°) + isin(150) into rectangular form.

Mathematics
2 answers:
olasank [31]3 years ago
5 0

Answer:

(-2 sqrt(3), 2)

Step-by-step explanation:

It is looking for a coordinate on a rectangular plane.

4(cos(150)+<em>i</em>sin(150))

x = rcosθ; y = rsinθ

For X:

x = 4cos(150);

x = 4 * -sqrt(3)/2; \

x = -2sqrt(3)

For Y:

y = 4sin(150)

y = 4 * 1/2

y = 2

Then you just put it as (x, y) with out <em>i</em>

(2sqrt(3), 2)

I also took the test on a p e x

salantis [7]3 years ago
3 0

Answer:

The rectangular form of 4[cos(150^{o})+i sin (150^{o})] is -2\sqrt{3}+2i.

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What number must be added to the expression below to complete the square? x^2+x. a.1/4 b.1/2 c.2 d.1
torisob [31]

Option a. 1/4 is the right answer

Step-by-step explanation:

Given expression is:

x^2+x

Here

we know that

a = x

In order to find the number which should be added

comparing with the formula

(a+b)^2 = a^2+2ab+b^2

2ab = x\\2.x.b = x\\b=\frac{x}{2x}\\b = \frac{1}{2}

So, we will add the square of 1/2 which is 1/4

Hence,

Option a. 1/4 is the right answer

Keywords: Expressions, polynomials

Learn more about polynomials at:

  • brainly.com/question/629998
  • brainly.com/question/6208262

#LearnwithBrainly

3 0
3 years ago
if there are 90 calories in 3/4 cuo of yogurt how man calories are in 3 cups of yogurt 30 calories 202 calories 270 calories 360
Debora [2.8K]
Hello!

To find how many calories in three cups we can use the proportion below.

\frac{calories}{cups} = \frac{90}{3/4} = \frac{c}{3}

To find our answer we can say, "How many times does 3/4 go into 3," and then multiply that number by 90 as shown below.

3÷3/4=4
90(4)=360

Just to verify, we will cross multiply and check our answer 

90(3)÷3/4
270÷3/4=360

Therefore, our answer is D) 360 calories.

I hope this helps!

6 0
3 years ago
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levacccp [35]

Answer:

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Step-by-step explanation:

Slope=-2

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4 0
3 years ago
PLEASE HELP! I will award brainliest!!!!
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Answer:

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6 0
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velikii [3]
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