Cos theta is equal to minus 1 upon 2
- Cos alpha is equal to 2 cos theta minus 1 upon 2 minus cos theta
- Cos 2 theta is equal to 1 minus 10 square theta upon 1 tan square theta
- If cos alpha is equal to 2 cos theta minus 1 upon 2 minus cos theta
- Cos 2 theta is equal to 1 minus 10 square theta upon 1 10 square theta
- If cos theta is equal to 1 upon 2 then cos theta minus sec theta is equal to
- 1 + sin theta
- 7 sin square theta + 3 cos square theta equal to 4