1.

What is the simplified value of \(\left[ {\frac{{\cos A}}{{(1 - \tan A)\;}} + {{\frac{{\sin A}}{{(1 - \cot A)\;}}}}} \right]^2?\)

A. sin A + cos A
B. 1 + sin 2A
C. 1 + cos 2A
D. tan A + cot A
Answer» C. 1 + cos 2A


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