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

If f(theta)=det[[cos theta,1,01,2cos theta,10,1,2cos theta]] then range

(sin theta)/(1+cos theta)+(1+cos theta)/(sin theta)=2cos ec theta

(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

The value (2cos theta-1)(2cos2 theta-1)(2cos4 theta-1)(2cos8 theta-1)=

2(cos theta+cos2 theta)+(1+2cos theta)sin2 theta=2sin theta

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

The minimum value of determinant Delta=|{:(1,cos theta,1),(-cos theta , 1,cos theta),(-1,-cos theta, 2):}| AA theta in R is :