Evaluate the given functions with the following information: sin = 4 5 ( in first quadrant)

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Evaluate the given functions with the following information: sin α = 4 5 (α in first quadrant) and cos β = −12 13 (β in second quadrant).

cos(α + β)

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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