30*cosec A-2cot2A cos A=2sin A

cosec A- 2cot 2A cos A=

cosec A -2 cot 2A cos A=

Prove that cosec A -2 cot 2 A cos A = 2 sin A.

cosec A -2 cot 2A cos A= ................ A) 2 sin A B) sec A C) 2 cos A cot A D) cos A

Prove the following identities : (1 + sin A)/ (cosec A - cot A) - (1 - sin A)/ (cosec A + cot A) = 2(1 + cot A)

( cos A - sin A + 1 ) / ( cos A + sin A - 1 ) = cosec A + cot A cosec A + cot A , = using the identity cosec ^ 2 A = 1 + cot^ 2 A .

Prove that (sin A +cosec A) ^(2) +(cos A +sec A) ^(2) =7+ tan ^(2) A +cot ^(2) A

Prove that (sin A +cosec A) ^(2) +(cos A +sec A) ^(2) =7+ tan ^(2) A +cot ^(2) A

Prove that (sin A +cosec A) ^(2) +(cos A +sec A) ^(2) =7+ tan ^(2) A +cot ^(2) A