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$\frac{\cos 11^{\circ} - \sin 11^{\circ}}{\cos 11^{\circ} + \sin 11^{\circ}}$ is equal to

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cot⁡56∘

tan⁡11∘

tan⁡56∘

cot⁡11∘

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detailed solution

Correct option is A

cos⁡11∘−sin⁡11∘cos⁡11∘+sin⁡11∘=cos⁡11∘+cos⁡90∘+11∘cos⁡11∘−cos⁡90∘+11∘=2cos⁡56∘cos⁡45∘2sin⁡56∘sin⁡45∘=cot⁡56∘

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cos⁡11∘−sin⁡11∘cos⁡11∘+sin⁡11∘ is equal to

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$\frac{\cos 11^{\circ} - \sin 11^{\circ}}{\cos 11^{\circ} + \sin 11^{\circ}}$ is equal to