Question: Problem 10 (5 points - Bonus!). Show the following trigonometric identity. Justify each step, and show all work. (This will be graded strictly. ) cos

Problem 10 (5 points - Bonus!). Show the following trigonometric identity.

Problem 10 (5 points - Bonus!). Show the following trigonometric identity. Justify each step, and show all work. (This will be graded strictly. ) cos (4x) cos (2x ) - sin (2x) cos? (2) + 2 sin(a) cos(x) - sin?(x)

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