Let sin a=3/5, with a in Quadrant II, and let cos B=5/13, with B in Quadrant IV. Find the exact values for each of the following. a) sin (a+B) b) cos (a-B) c) tan 2a d) sin B/2

Answer 1

For sin a = 3/5 in QII, cos a = ?

For cos b = 5/13 in QIV, sin b = ?

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