x=sqrt((1-cos theta)/(1+cos theta))rArr(2x)/(1-x^(2))=(" EAMCET "-1997)

If x=sqrt((1-cos theta)/(1+cos theta)), then (2 x)/(1-x^(2))=

If x=sqrt((1- cos theta )/(1+ cos theta )), " then " (2 x)/(1-x^(2))=

Find the value of sqrt((1+cos theta)/(1-cos theta))+sqrt((1-cos theta)/(1+cos theta))

Prove that sqrt((1+costheta)/(1-costheta))+sqrt((1-cos theta)/(1+cos theta))=2 " cosec"theta.

If x = (1-cos^2 theta)/(cos theta), y = (1-cos^(2n)theta)/(cos^n theta) then show that (dy/dx)^2 = n^2((y^2 + 4)/(x^2 +4))

If 2cos theta=x+1/x then 2cos^2 theta=

lim_(x rarr2)((cos theta)^(x)(sin theta)^(x)-1)/(x-2) equals

if sqrt(x)+(1)/(sqrt(x))=2cos theta then x^(6)+(1)/(x^(6))=

root(7)((1+cos theta)/(1-cos theta))+sqrt((1-cos theta)/(1+cos theta))=2cos ec theta

If x=sqrt(tan theta)-1 and y=sqrt((cos theta-sin theta)/(sin theta+cos theta)+2 then the value of )(2+2x+x^(2))(5-4y+y^(2)) is