Question

A point is graphed in polar form. Find its rectangular coordinates.

http://www.webassign.net/sprecalc/8-1-23.gif

R=( , )

Answer 1

r = 5; -120

x= -5/2; y= = -5sqrt(3)/2

Answer 2

R = (-5/2, -5sqrt(3)/2)

Answer 3

the y is wrong

Answer 4

x is right

Answer 5

5 * sin(-120) = -5 sin(120) = -5(sqrt(3)/2)

Answer 6

120 is 2pi/3

Answer 7

it cant be anything else

Answer 8

its the sin and cos of 60 but in the Q3

Answer 9

with a radius of 5 :)

Answer 10

ah... got it :)