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Suppose that and B are acute angles such that cos (a) = 4/5 and tan...

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Suppose that and B are acute angles such that cos (a) = 4/5 and tan (B) = 15/8Compute the following. Enter exact answers; decimal approximations will be marked incorrect.(a) sin(a + B)(b) cos(a + B)(c) sin(2a)

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Suppose that and B are acute angles such that cos (a) = 4/5 and tan (B) = 15/8Compute the following. Enter exact answers; decimal approximations will be marked incorrect.(a) sin(a + B)(b) cos(a + B)(c) sin(2a)

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