Chlo A.

asked • 02/16/20

trig problem please help, step by step

Find the EXACT value of cos(A+B) if sin A = −5/13 where A is in Quadrant IV and sin B = −8/17 where B is in Quadrant III. Assume all angles are measured from standard position. cos(A+B) =

1 Expert Answer


Mark H. answered • 02/16/20

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