cos2 theta+2cos theta" is always "

cos2 theta+2 costheta is always

cos2 theta+2 costheta is always

cos2 theta=cos^(2)theta

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

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

What is the value of [(cos 3 theta + 2cos 5 theta+ cos 7 theta)/(cos theta + 2cos 3 theta + cos 5 theta)] + sin 2 theta tan 3 theta ? [(cos 3 theta + 2cos 5 theta+ cos 7 theta)/(cos theta + 2cos 3 theta + cos 5 theta)] + sin 2 theta tan 3 theta का मान क्या है?

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

Prove that, If " "15 theta = pi, "show that," cos theta cos2 theta cos3theta cos 4theta cos5 theta cos6theta cos7theta =1/2^(7)

int cos2 theta * ln ((cos theta + sin theta) / (cos theta-sin theta)) d theta