If `f(x) =(1-x)/(1+x)` then `f(cos theta)` is

If f(x)=(1-x)/(1+x), then f[f(cos2 theta)]=

If f(x)=(1-x)/(1+x), find f(cos theta)

if f(x)=(1-x)/(1+x) then prove that f(cos2 theta)=tan^(2)theta

If f(x)=(1-x)/(1+x) then f{f((1)/(x))}

If f(x)=(1-x^(2))/(1+x^(2)) then show that f(tan theta)=cos2 theta

f(x)=(1-x)/(1+x) then f{f((1)/(x))}

If f(x)=sqrt((1-x)/(1+x)) , then evalaute :f(cos 2theta)

If f(x)=(1-x^(2))/(1+x^(2)) , then prove that: f(tan theta)=cos 2theta

If f(x) = (1+ x)/(1-x) , show that f(f (tan theta)) = - cot theta .

If f(x)=(x-1)/(x+1), then f(f(ax)) in terms of f(x) is equal to (a) (f(x)-1)/(a(f(x)-1)) (b) (f(x)+1)/(a(f(x)-1))(c)(f(x)-1)/(a(f(x)+1))(d)(f(x)+1)/(a(f(x)+1))