In Problems 7382, solve each equation on the interval 0 < 2. cos(20) = 2
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In Problems 73–82, solve each equation on the interval 0 ≤ θ < 2π.
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cos(20) = 2 2 sin ²0
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Precalculus Concepts Through Functions A Unit Circle Approach To Trigonometry
ISBN: 9780137945139
5th Edition
Authors: Michael Sullivan
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