Simplify 2cos(x)^2
Problem
Solution
Identify the expression as a trigonometric term involving a squared cosine function.
Apply the power-reduction formula for cosine, which states that
cos2(x)=(1+cos(2*x))/2 Substitute the formula into the original expression:
2⋅(1+cos(2*x))/2 Simplify the expression by canceling the factor of
2 in the numerator and denominator.
Final Answer
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