Show that: `t a n(60^0+theta)t a n(60^0-theta)=(2cos2theta+1)/(2cos2theta-1)`

Explanation

To prove the identity \( \tan(60^\circ + \theta) \tan(60^\circ - \theta) = \frac{2 \cos 2\theta + 1}{2 \cos 2\theta - 1} \), we will start with the left-hand side (LHS) and simplify it step by step.

### Step 1: Write down the LHS
We start with the left-hand side:
\[ LHS = \tan(60^\circ + \theta) \tan(60^\circ - \theta) \]

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