# Solution: Determine the rectangular coordinate (x, y) of a point in the curve when θ is 30º

Given the polar equation r = 5 sin θ. Determine the rectangular coordinate (x, y) of a point in the curve when θ is 30º. How to find rectangular coordinate given polar equation and theta?

#### Problem Statement: EE Board October 1997

Given the polar equation r = 5 sin θ. Determine the rectangular coordinate (x, y) of a point in the curve when θ is 30º.

The rectangular coordinate given the polar equation is (2.17, 1.25).

Solution:

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