Use the half-angle formulas to solve the given problems. If 90 < < 180 and sin

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Use the half-angle formulas to solve the given problems.

If 90° < θ < 180° and sinθ = 4/5, find cos(θ/2).

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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Question Posted: Apr 05, 2023 03:34 AM

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Use the half-angle formulas to solve the given problems. If 90 < < 180 and sin

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We know that sin 45 and we can use the Pythagorean identity sin2 cos2 1 to find cos sin2 cos...View the full answer

Basic Technical Mathematics

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