Use a half-angle identity to find the exact value. cos 15° cos 15° (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
Use a half-angle identity to find the exact value. cos 15° cos 15° (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter3: Radian Measure
Section3.1: Reference Angle
Problem 92PS
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