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How Do You Find Cos 2Pi? [Solved]
Cos 2pi Using Double Angle Formula We have cos 2pi = cos2π - sin2π. Since π is not a standard angle we will determine the values of cos π and sin π using angle sum formulas. Substitute these values in cos 2pi = cos2π - sin2π, we have cos 2pi = (-1)2 - 0 = 1. Hence cos 2 pi is equal to 1.
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