Complete list of Terms and Definitions for Trig. Review 2
| Terms | Definitions |
|---|---|
| sin 2π | 0 |
| tan 4π/3 | √3 |
| sin π/3 | √3/2 |
| tan 0 | 0 |
| tan 11π/6 | -√3/3 |
| tan 2π/3 | -√3 |
| tan 7π/4 | -1 |
| tan π/3 | √3 |
| cos 3π/2 | 0 |
| cos 2π/3 | -1/2 |
| cos 2π | 1 |
| tan π/2 | undefined |
| cos 5π/6 | -√3/2 |
| tan 7π/6 | √3/3 |
| tan π | 0 |
| cos π/2 | 0 |
| cos π | -1 |
| tanθ = | sinθ/cosθ |
| cos(-θ) = | cosθ |
| cscθ = | 1/sinθ |
| cos π/4 | √2 /2 |
| cos 3π/4 | -√2 /2 |
| sin 3π/4 | √2 /2 |
| tan(π/2 - θ) | cotθ |
| sin^2θ + cos^2θ = | 1 |
| 1 + tan^2θ = | sec^2θ |
| sin(x+y) = | sinxcosy + cosxsiny |
| cos^2x = | 1 + cos2x/2 |
| tan2x = | 2tanx/1 - tan^2x |
| cos2x = | cos^2x - sin^2x OR 2cos^2x - 1 OR 1 - 2sin^2x |