SOLUTION: If sin A = 3/5 and cos B = 12/13, and A and B are both positive acute angles, find the value of cos (A+B).
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Question 1106079: If sin A = 3/5 and cos B = 12/13, and A and B are both positive acute angles, find the value of cos (A+B). Answer by ikleyn(52832) (Show Source):
