Question

Find the rectangular coordinates of the point with the polar coordinates (\(\sf 3, \dfrac 32 \pi)\)

Answer 1

@phi

Answer 2

do you recall the conversion formulas?

Answer 3

I know that rectangular form is < a, b >

Answer 4

thats right, and polar is (r,t) or radius and angle

Answer 5

I would need to use x = r cos \(\theta\) and y = r sin \(\theta\) right?

Answer 6

correct

Answer 7

x = 3 cos(3pi/2)
y = 3 sin(3pi/2)

should do it then

Answer 8

Okay, would that be it?

Answer 9

that would be it yes.

Answer 10

Thanks :)

Answer 11

3pi/2 is what, 270 degrees? so the cos parts are 0 and the sin is -1 if memory serves