click below
click below
Normal Size Small Size show me how
Trig Formulas
| Answer | Formula |
|---|---|
| secx | 1/cosx |
| cscx | 1/sinx |
| cotx | 1/tanx |
| tanx | sinx/cosx |
| cotx | cosx/sinx |
| sin^2 x + cos^2 x | 1 |
| tan^2 x + 1 | sec^2 x |
| 1 + cot^2 x | csc^2 x |
| sin(x+-y) | sinxcosy+-cosxsiny |
| cos(x+-y) | cosxcosy-+sinxsiny |
| tan(x+-y) | tanx +- tany OVER 1-+tanxtany |
| sin2x | 2sincosx |
| cos2x | cos^2 x- sin^2 x 1 - 2sin^2 x 2cos^2 x - 1 |
| tan2x | 2tanx OVER 1-tan^2 x |