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$\frac{\cos A}{c o t A} + \sin A =_______$

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cot A

2 sin A

2 cos A

sec A

answer is B.

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Detailed Solution

$(\frac{\cos A}{c o t A}) + \sin A = \frac{\cos A}{\frac{\cos A}{\sin A}} + \sin A [c o t A = \frac{\cos A}{\sin A}] = \sin A + \sin A = 2 \sin A$

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