[" Show that,"(sec8A-1)/(sec4A-1)=(tan8A)/(tan2A)quad " [NCEF "],[1]

(sec8A-1)/(sec4A-1)=(tan 8A)/(tan2A)

Prove that (sec8A-1)/(sec4A-1)=(tan8A)/(tan2A)

Prove that (sec 8A-1)/(sec 4A-1)=(Tan8A)/(Tan2A)

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

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

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

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

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

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

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