If `f(theta)=|(cos theta,1,0),(1,2cos theta,1),(0,1,2cos theta)|` then range of `f(theta)` is

(cos theta)/(cos ec theta+1)+(cos theta)/(cos ec theta-1)=2tan theta

consider f_(n)(theta)=(2cos theta-1)(2cos2 theta-1)(2cos(2^(2)theta)-1)....(2cos(2^(n)theta)-1) the value of f_(n)(theta) is equal to

If f(theta)=[(cos theta, -sin theta,0),(sin theta, cos theta, 0),(0,0,1)] then {f(theta)^(-1)} is equal to

If A = [( 1, cos theta , 1),( - cos theta ,1,cos theta ),( -1 , - cos theta ,1)] where 0 le theta le 2 pi then …..

If A = [( 1, cos theta , 1),( - cos theta ,1,cos theta ),( -1 , - cos theta ,1)] where 0 le theta le 2 pi then …..

If f(theta)=(1-sin2 theta +cos theta theta)/(2 cos 2 theta) , then value of f(11^(@))*f(34^(@)) is __________

If f(theta)=(1-sin2 theta+cos2 theta)/(2cos2 theta), then value of 8f(11^(0))*f(34^(0))^(0) is

If f(theta) = (1-sin 2 theta + cos 2 theta)/(2 cos 2theta) , then value of 8 f(11^(0)).f(34^(0)) is ___________