In you transformed y = cos (x 2) to y = cos x cos 2 + sin x sin 2 Plot both graphs on
Chapter 5, Problem T.10(choose chapter or problem)
In you transformed y = cos (x 2) to y = cos x cos 2 + sin x sin 2 Plot both graphs on the same screen. Explain in writing how your graphs confirm that the two equations are equivalent. T1
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