Question

Helpppp?
Find the rectangular coordinates of the point with the polar coordinates (-3, 5pi/3).

Answer 1

use the equation a+b i

Answer 2

That's a form?

Answer 3

wait sorry wrong equation.
Look on the unit circle to find what is 5pi/3 equal to?

Answer 4

first coordinate will be -3/2

Answer 5

Since the 3 is negative, you have to go 180, so it will be 2pi/3.. Right?

Answer 6

How did you know the -3/2???

Answer 7

@foxybrown

Answer 8

the r's value is negative

Answer 9

you have to use these equations
x = rcostheta and y = rsintheta and substitute your values.

Answer 10

I swear I've tried that fourteen hundred times, and I can never get it to come to my answer choices...

Answer 11

Or do I use the new numbers? The -3/2, and 2pi/3?