1 cos 2 theta * sec
- (cos theta)/(cosec(theta) + 1) + (cos theta)/(cosec(theta) - 1) u003d 2
- sec theta cos theta 1 then tan 2 theta 2
- 5 sec theta 1 2 cos theta 0
- sec theta cot theta 2 1 cos theta 1 cos theta
- 1 sec theta sec theta sin 2 theta 1 cos theta
- square root 1 cos 2 theta sec 2
- 1 cos 2 theta * sec 2 theta is equal to
- 1 cos 2 theta sec 2 theta
- 1 cos 2 theta sec 2theta tan 2theta
- 1 cos 2 theta sec 2 theta tan theta
