Prove that `(Sec8A-1)/(Sec4A-1)=(tan8A)/(tan2A)`

Prove that (sec8x-1)/(sec4x-1)=(tan8x)/(tan2x)

Prove that (i) (sec 8A -1)/(sec 4A -1) =(tan 8A)/(tan 2A) (ii) (cos A+ sin A)/(cos A - sin A)-(cos A-sin A)/(cos A+sin A)=2 tan 2A

Prove that: (sec4A-1)/(sec8A-1)=tan2A. cot8A

Prove that: (sec8 theta-1)/(sec4 theta-1)=(tan8 theta)/(tan2 theta)

Prove that (sec A+1)/(tan A)=(tan A)/(sec A-1)

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

Prove that (sec4 theta-1)/(sec2 theta-1)=(tan4 theta)/(tan theta)

Prove that sec A(1-sin A)(sec A+tan A)=1

Prove the following Identities (sec8theta-1)/(sec4theta-1)=(tan8theta)/(tan2theta)

Prove that (1+sec A-tan A)/(1+sec A+tan A)=1-sin A/(cos A)