sec^(-1)(-2)

(sec 2A+1 ) sec ^(2) A=

((sin2A)/(sec A-1))((sec2A)/(sec2A+1))=

((sin 2A)/(sec A -1))((sec 2A)/(sec 2A+1))=

intx((sec2x-1)/(sec2x+1))dx

intx ((sec 2x-1)/(sec 2x+1))dx=

Prove that , (1+sec 2 theta) (1+sec2^(2) theta)(1+ sec2^(3)theta)... ( 1+sec 2^(2) theta) = (tan 2^(n) theta)/tan theta

The value of tan((theta)/(2))(1+sec theta)(1+sec2 theta)+(1+sec2^(2)theta)...(1+sec2^(n)theta) is

sec^(2)A(1+sec2A)=2sec2A

(1)/(sec^2A)+(1)/(cosec^2A) = …………….