Question: Given sin a=4/5,0 less than a less than pi/2; sin B=5/13, pi/2less than a less than pifind cos(a B) and tan (a-B)

Given sin a=4/5,0 less than a less than pi/2; sin B=5/13, pi/2less than a less than pifind cos(a B) and tan (a-B)

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