Question

Find the rectangular coordinates of the point with the polar coordinates.

(3, 2pi/3)

Answer 1

x=r cos theta ; y = r sin theta

Answer 2

r = 3

Answer 3

theta = (2pi/3)

Answer 4

x=?
y=?

Answer 5

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

Answer 6

(x,y) = 3 *cos 120 ; y = 3*

Answer 7

y=3*sin 120

Answer 8

Cos120=? @katiexo

Answer 9

Sin120=?

Answer 10

cos of 120 = .8142? sin 120 = .5806?

Answer 11

i'm in radians

Answer 12

Cos120=cos(90+30)=?

Answer 13

-1/2

Answer 14

x=?

Answer 15

3

Answer 16

No

Answer 17

-3/2

Answer 18

wait x=-3/2 and since sin(120) is sqrt of 3/2 then y = 3*sqrt of 3/2? @shamim

Answer 19

Correct!!!!

Answer 20

Thanks!

Answer 21

Anyway i m in bus travelling to my college. So late to reply