## Trigonometry

### Video

The Six Trigonometric Functions

1. $\sin \theta = \dfrac{a}{c}$
2. $\cos \theta = \dfrac{b}{c}$
3. $\tan \theta = \dfrac{a}{b}$
4. $\csc \theta = \dfrac{c}{a}$
5. $\sec \theta = \dfrac{c}{b}$
6. $\cot \theta = \dfrac{b}{a}$