" (c) "cosec2A+cot2A=cot A

cosec A- 2cot 2A cos A=

cosec A -2 cot 2A cos A=

" cosec 2x + cot 2x = cot x "

Given : 4 cot A = 3 , find : "cosec"^2A - cot^2A

The value of (cosec 2A - cot 2A) is-

If A+B+C =pi , show that cot A + cot B+cot C-cosec A *cosec B* cosec C = cot A*cot B*cot C .

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

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)