Prove that
`tan8theta - tan6theta - tan2theta= tan8theta tan6theta tan2theta`

Explanation

To prove that \( \tan 8\theta - \tan 6\theta - \tan 2\theta = \tan 8\theta \tan 6\theta \tan 2\theta \), we will start with the left-hand side (LHS) and manipulate it to show that it equals the right-hand side (RHS).

### Step 1: Write down the LHS
The left-hand side of the equation is:
\[ LHS = \tan 8\theta - \tan 6\theta - \tan 2\theta \]

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