Question: For the following exercises, find the requested information. Given that sin a =4/5, and cos b =1/3, with a and b both in the interval

For the following exercises, find the requested information.

Given that sin a = 4/5, and cos b = 1/3, with a and b both in the interval [0,π/2), find sin(a − b) and cos(a + b).

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