Posted by **yadlay** on Tuesday, April 13, 2010 at 12:07am.

Draw the unit circle and a first-quadrant ray from the origin that makes an angle theta with the positive x-axis. Let B be the point on this ray whose x-coordinate is 1, and let

A = (1, 0). Segment AB is tangent to the circle. In terms of theta, find its length.

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