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Simplify the following expression into a single trigonometric ratio: a. Sin 2x cos 4x + cost sin4x b. cos4M cos 2M 4- sin 4M sin

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Simplify the following expression into a single trigonometric ratio: a. Sin 2x cos 4x + cost sin4x b. cos4M cos 2M 4- sin 4M sin 2M tan5x+ tan3x l tanSxtan3x Given : cos A = _?3 and A is in the 2\"\" Quadrant sin B = 3254 and B is in the 3" Quadrant determine the values of the following: a. cos (A + B i A b. i sn 2 C. SEC 23

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