Prove that `sqrt(3) " cosec "20^(@)-sec 20^(@)=4`

Explanation

To prove that \( \sqrt{3} \csc 20^\circ - \sec 20^\circ = 4 \), we will follow these steps:

### Step 1: Rewrite the trigonometric functions in terms of sine and cosine
We start with the left-hand side (LHS):
\[ \sqrt{3} \csc 20^\circ - \sec 20^\circ \]
We know that:
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