Find the exact coordinates of a point on a circle using the radius of the circle and the terminal side of θ.?

Question

I have several of these. Is somone able to help me with them. My MSN is [e-mail] I also need help with lots of other trig questions. So if you are willing to explain in detail that would be very helpful. Thanks in advance.

Thank you phillo. The problem is the answers that i have to choose from come in a fraction. And I only come out with a decimal answer.

Answer 1

If you know r and Θ, then
x = r cos Θ and y = r sin Θ