Question: Given that sin A = 8/17, where A is acute, and cos B = 4/5, where B is obtuse, calculate the exact value of:

Given that sin A = 8/17, where A is acute, and cos B = − 4/5, where B is obtuse, calculate the exact value of:

a. sin (A − B)

b. cos (A − B)

c. cot (A − B)

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