Exact Values Problems: For 2126: a. Use the double and half argument properties to find
Chapter 5, Problem 21(choose chapter or problem)
Exact Values Problems: For 2126: a. Use the double and half argument properties to find the exact values of the functions, using radicals and fractions if necessary. b. Show that your answers are correct by finding the measure of A and then evaluating the functions directly. If cos A = and A (0, 90), find sin 2A and cos A.
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