Question: Here is the question. 8 21 Find the exact value of sin (a - B) if sin a = - 17 and cos B =
Here is the question.

8 21 Find the exact value of sin (a - B) if sin a = - 17 and cos B = - 29 with a in quadrant III and B in quadrant II. sin (a - B) = (Simplify your answer.)
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