1.

1+cos A1-cos A=?(a) cosec A – cot A(b) cosec A + cot A(c) cosec A cot A(d) none of these

Answer» 1+cos A1-cos A=?

(a) cosec A – cot A

(b) cosec A + cot A

(c) cosec A cot A

(d) none of these


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