9.quad cosec2A+cot2A=cot A

cosec A- 2cot 2A cos A=

cosec A -2 cot 2A cos A=

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

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

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 .

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

Eliminate A between the equation : a cosec A +b cot A= x^2, b cosec A+ a cot A= y^2 .

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

The expression cosec^(2)A cot^(2)A-sec^(2)A tan^(2)A-(cot^(2)A-tan^(2)A)(sec^(2)A cosec^(2)A-1) is equal to