| Trigonometric Identities | |
|---|---|
| Basic Definitions | |
| Definition of tangent | $ \tan \theta = \frac{\sin \theta}{\cos\theta} $ credit |
| Definition of cotangent | $ \cot \theta = \frac{\cos \theta}{\sin\theta} $ credit |
| Definition of secant | $ \sec \theta = \frac{1}{\cos \theta} $ |
| Definition of cosecant | $ \csc \theta = \frac{1}{\sin \theta} $ |
| Pythagorean identity and other related identities | |
| Pythagorean identity | $ \cos^2 \theta+\sin^2 \theta =1 $ |
| write name here | place formula here |
