" 6."" On "f(vec N)=(1-A)/(1+I)" Ho "fee" Keanwir "bar(F)f(cos theta)=wa^(2)(p)/(2)

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

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

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

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

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

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

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

If f(theta)=sum_(n=1)^(6)cos ec(theta+((n-1)pi)/(4))cos ec(theta+(npi)/(4)) , where 0ltthetalt(pi)/(2) , then find the minimum value of f(theta) .