Find the rectangular coordinates

Question

Find the rectangular coordinates of the point Q(-5, -35°)

 

 

a. (4.10, 2.87)
b. (-4.10, 2.87)
c. (-4.10, -2.87)
d. (4.10, -2.87)

Answer 1

Hi again, Chyna.

 

Remember:

 

x=r cos(theta)

y=r(sin(theta)

 

your r = -5

your theta = -35

 

x = (-5) cos(-35) = -4.096

 

y = (-5) sin(-35) = 2.868

 

Looks like the answer should be B