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CT 4. Solve the following equations: (a) cos 3.r cos 2x = sin 3x sin 2x + ,; for me [0, ;]; (b) cos +

CT 4. Solve the following equations: (a) cos 3.r cos 2x = sin 3x sin 2x + ,; for me [0, ;]; (b) cos + cos 3.r = 0 for r e [0, "]; (c) cos 2r - cost = -1, for re R

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