Question
Simplify the given expression.$$\cos ^{2}\left(\frac{x}{2}\right)-\sin ^{2}\left(\frac{x}{2}\right)$$
Step 1
Step 1: We are given the expression $\cos ^{2}\left(\frac{x}{2}\right)-\sin ^{2}\left(\frac{x}{2}\right)$. Show more…
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