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Trig IDs
| Question | Answer |
|---|---|
| csc t | 1/sin t |
| sec t | 1/cos t |
| cot t | 1/tan t |
| tan t | sin t/cos t |
| cot t (2) | cos t/sin t |
| sin^2t + cos^2t | 1 |
| 1 + tan^2t | sec^2t |
| 1 + cot^2t | csc^2t |
| sin (-t) | -sin t |
| cos (-t) | cos t |
| tan (-t) | -tan t |
| sin (u +v) | sin u cos v + sin v cos u |
| cos (u+v) | cos u cosv - sin u sin v |
| tan (u+v) | tan u + tan v/ 1- tan u tan v |
| sin (u-v) | sin u cos v - sin v cos u |
| cos (u-v) | cos u cos v + sin u sin v |
| tan (u-v) | tan u - tan v/ 1+ tan u tan v |
| sin 2u | 2 sin u cos u |
| cos 2u | cos^2u-sin^2u |
| tan 2u | 2tan u/1- tan^2u |
| Special Triangle : 90/45/45 | sqrt 2/1/1 |
| Special Triangle: 90/60/30 | 2/sqrt 3/1 |
Created by:
NicoleKrell
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