View Full Version : need help with this problem

08-27-2005, 12:00 PM
Given a 50 degree angle. 2 sides of the angles are tangent to a circle of radius 2 at points A and B. What is the length of segment AB?


08-27-2005, 01:15 PM
How far have you gotten with this? You've drawn the circle, the sides of the angle, the radius lines from the circle's center to A and B, the line from the center of the circle to the vertex of the angle, and the chord AB. You've recalled that tangents are at right angles to radius lines, so you've labelled the right angles. And... then what?


08-27-2005, 02:47 PM
oh! now I get it. I see some right triangles and use sine to solve for one side then double it to get AB.
Thanks for your assistance :D