सिद्ध कीजिए कि \( \sqrt{3} \operatorname{cosec} 20^{\circ}-\sec 20^{\circ}=4 \).

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सिद्ध कीजिए कि \( \sqrt{3} \operatorname{cosec} 20^{\circ}-\sec 20^{\circ}=4 \).
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