If `f(x)=cos^2theta+sec^2theta,` then `f(x)<1` (b) `f(x)=1` `2>f(x)>1` (d) `f(x)geq2`

If f(x)=cos^(2)x+sec^(2)x , then

If f(x)=cos^(2)x+sec^(2)x, then (a) f(x) =2

If f(x)=cos^(2)x+sec^(2)x, then f(x) =2

If f(x)=|{:( sin^2 theta , cos^(2) theta , x),(cos^(2) theta , x , sin^(2) theta ),( x , sin^(2) theta , cos^2 theta ):}| theta in (0,pi//2), then roots of f(x)=0 are

f(n,theta)=(1+sec2 theta)(1+sec2^(2)theta)...(1+sec2^(n)theta) then f(1,(pi)/(6)) and f(2,(pi)/(12))=

If f(x)=cos(log x), then f(x)f(y)-(1)/(2)[f((x)/(y))+f(xy)]=

If f(x)=cos(log x), then f(x)f(y)-(1)/(2)[f((x)/(y))+f(xy)]=

If f(x)=sin theta.x+a and the equation f(x)=f^(-1)(x) is satisfied by every real value of x, then

If f(x)=|{:(sectheta," "tan^(2)theta,1),(thetasecx," "tanx,x),(" "1,tanx-tantheta,0):}| , then f'(theta) is