(sec8A-1)/(sec4A-1)" is equal to "

(sec 8 A-1)/( sec 4A-1)=

(sec8A+sec4A-2)/(sec8A-sec4A) is equal to (A)(tan6A)/(tan10A) (B) (cos10A)/(cos6A)(C)(sin10A)/(sin6A) (D) (tan10A)/(tan6A)

sec(cosec^-1x) is equal to

Prove that (sec 8A-1)/( sec 4 A -1) = ( tan 8 A)/( tan 2A).

(1+cot A-csc A)(1+tan A+sec A)" is equal to "

sec^4x-sec^2x is equal to

(sec A (sec A + tan A)(1-sin A))/ ((cosec^2 A-1)sin^2 A) is equal to: (sec A (sec A + tan A)(1-sin A))/ ((cosec^2 A-1)sin^2 A) का मान क्या होगा ?

(tan A)/(1+sec A)+(1+sec A)/(tan A) is equal to