1.

Cot(? + ?) =

A. Cot?cot?-1/cot?+cot?
B. Cot?cot?+1/cot?-cot?
C. Cot?cot?+1/cot?+cot?
D. None of Above
Answer» B. Cot?cot?+1/cot?-cot?


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