Use the half-angle formulas to evaluate the given functions. cos 15
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Use the half-angle formulas to evaluate the given functions.
cos 15°
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We can use the halfangle formula for cosine to write cos 15 cos302 1 cos 302 Since 15 is ...View the full answer
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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