Prove that
`sec(pi/4+theta)sec(pi/4-theta)=2 sec 2theta`

sec(pi/4+theta)sec(pi/4-theta)=2sec2theta

sec((pi)/(4)+theta)sec((pi)/(4)-theta)=2sec2 theta

Prove that cosec(pi/4+theta/2)cosec(pi/4-theta/2)=2sec theta

Prove that: tan(pi/4+theta)+tan(pi/4-theta)=2sec2theta .

Prove that, tan (pi/4 + theta) + tan (pi/4 - theta) = 2 sec 2 theta

sec4theta - sec2theta=2

Prove that : tan((pi)/(4)+theta)+tan((pi)/(4)-theta)=2sec2 theta

Prove that: tan((pi)/(4)+theta)+tan((pi)/(4)-theta)=2sec2 theta

Prove that: (1+sec2 theta)(1+sec4 theta)(1+sec8 theta)...(1+sec2^(n)theta)=tan2^(n)theta cot theta,n in N

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