# TRIGONOMETRY

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3. The rectangular coordinates of a point are given. Find the polar coordinates of each point.

b. (0,3)

I figured out a, but I canNOT figure out b. Can someone please explain? :)I need to know how to do this for my final next week.

• TRIGONOMETRY -

as usual,
r^2 = x^2+y^2
r%2 = 9
r=3

y/r = sinθ
3/3 = sinθ
θ = π/2

so, we get (3,π/2)

• TRIGONOMETRY -

y/r!! That makes much more sense! Someone else had told me y/x, so that's why it didn't work. Thanks!

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