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Trigonometry and precalculus
Videos and exercises on trigonometry. Watch the "Geometry" playlist first if you have trouble understanding the topics covered here.

## Subtopics

- Graphing lines Graphing lines
- Functions and their graphs Functions and their graphs
- Polynomial and rational functions Polynomial and rational functions
- Exponential and logarithmic functions Exponential and logarithmic functions
- Basic Trigonometry Basic Trigonometry
- Trig identities and examples Trig identities and examples
- Parametric equations and polar coordinates Parametric equations and polar coordinates
- Conic sections Conic sections
- Systems of equations and inequalities Systems of equations and inequalities
- Sequences and induction Sequences and induction
- Probability and combinatorics Probability and combinatorics
- Imaginary and complex numbers Imaginary and complex numbers
- Hyperbolic trig functions Hyperbolic trig functions
- Limits Limits