Question: Use a double-angle or half-angle formula to simplify the given ex (a) If cos? (33 . ) - sin?(33) = cos(A ), then A =

Use a double-angle or half-angle formula to simplify the given ex (a) If cos? (33 . ) - sin?(33) = cos(A ), then A = degrees (b) If cos (6x ) - sin(6x) = cos(B), then B Question Help: Worked Example 1

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