Cos θ = 1, then cos 2θ = – InterviewSolution

1.

Cos θ = 1, then cos 2θ =

Answer»

Answer:

1

Step-by-step explanation:

cos THETA = 1

cos theta is = 1 only on 0 or on 2PI degrees

so 0 * 2 = 0

cos 2THETA = cos (2 *0)

cos 0 = 1

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