` ( 1 + tan ^ 2 A ) /( 1 + cot ^ 2 A ) = `

(tan ^ (3) A) / (1 + tan ^ (2) A) + (cot ^ (3) A) / (1 + cot ^ (2) A) = sec A cos ecA-2sin A cos A

prove (1 + tan^2A) / (1 + cot^2A) = [(1 - tan A) / (1 - cotA)] ^2 = tan^2A

Prove that (1 + 1/(tan^2A)) (1 + 1/(cot^2A)) = 1/(sin^2 A - sin^4 A )

Prove that : (1+ (1)/(tan^2 A)) (1 +(1)/(cot^2 A)) = (1)/(sin^2 A - sin^4 A)

(1-tan^2 45^@)/(1+cot^2 A ) is equal to ……

Simplest form of (1+ tan^2 A)/(1+cot^2A) IS

Simplest form of (1+ tan^2 A)/(1+cot^2A) IS

tan h^(-1) ((1)/(2)) + cot h^(-1) (2) =

Choose the correct option. Justify your choice : (1+tan^2A)/(1+cot^2A) a. sec^2A b. -1 c. cot^2A d. tan^2A

Prove the following identity : (1 - tan x)^2+(1 -cot x)^2 = (sec x -cosec x)^2 .