Posted by **sally** on Thursday, April 15, 2010 at 10:22pm.

5. The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P.

(a) Find the area of triangle PQR.

(b) Find the length of the projection of segment PQ onto segment PR.

(c) Find the length of segment QR.

(d) Find the sizes of the other two angles of triangle PQR.

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