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. $\cot \theta = \dfrac{b}{a}$