Posted by **Sally K** on Sunday, April 11, 2010 at 11:41pm.

1. The radius of the circumscribed circle of the triangle ABC is 15 cm. Given that B is a 49-degree angle, find the length of side AC.

2. The radius of the circumscribed circle of the triangle ABC is r cm.

Given that B is a â-degree angle, find the length of side AC, in terms of r and â.

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