Find cos 1/2x if sin x = 3/5 and 270 < x < 360.

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Find cos 1/2x if sin x = −3/5 and 270° < x < 360°.

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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Question Posted: Apr 09, 2023 03:10 AM

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Find cos 1/2x if sin x = 3/5 and 270 < x < 360.

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We can use the half angle formula for cosine to find cos12x in terms of s...View the full answer

Basic Technical Mathematics

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