Proved that `lim_(xrarr0) (tanx)/x = 1`

Explanation

To prove that \( \lim_{x \to 0} \frac{\tan x}{x} = 1 \), we can follow these steps:

### Step 1: Rewrite the tangent function
We start by rewriting the tangent function in terms of sine and cosine:
\[ \tan x = \frac{\sin x}{\cos x} \]
Thus, we can express the limit as:
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