For the following exercises, find the requested information. Given that sin a = 2/3 and cos b
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For the following exercises, find the requested information.
Given that sin a = 2/3 and cos b = −1/4, with a and b both in the interval [π/2 , π), find sin(a + b) and cos(a − b).
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sina b and cosa b sin a 23 an...View the full answer
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