46.cos2 theta+2cos theta" is always "

cos2 theta+2 costheta is always

cos2 theta+2 costheta is always

cos2 theta=cos^(2)theta

4cos6 theta cos4 theta cos2 theta=

The value of cos ^(2) theta + sec ^(2) theta is always

The value of cos ^(2) theta + sec ^(2) theta is always

For theta gt (pi)/(3), the value of f (theta) =(sec ^(2) theta + cos ^(2) theta) always lies in the interval-

If f(theta)=|(cos^(2) theta, cos theta sin theta, -sin theta),(cos theta sin theta, sin^(2) theta, cos theta),(sin theta, -cos theta, 0)| then f((pi)/12)=

If theta=(2 pi)/(4033), then cos theta*cos2 theta*cos3 theta*....cos2016 theta is equal