Trigonometry (MindTap Course List)

8th Edition

ISBN: 9781305652224

Author: Charles P. McKeague, Mark D. Turner

Publisher: Cengage Learning

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Question

Find the exact value of the expression using the provided information.

Find sin(s + t) given that cos s = - 1/4, with s in quadrant III, and cos t=-3/5 with t in quadrant III

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