`lim_(x->0)(1-cos2x)/x` is a. 1 b . 2 c. 4 d. 0

Explanation

To solve the limit \( \lim_{x \to 0} \frac{1 - \cos 2x}{x} \), we can follow these steps:

### Step 1: Use the trigonometric identity for cosine
We know that:
\[ \cos 2x = 1 - 2 \sin^2 x \]
Thus, we can rewrite the expression:
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