# Trigonometry

Canonical: https://manyspace.aporia.systems/subjects/mathematics/trigonometry-23
Updated: 2026-10-13

Trigonometry: about 26 hours. Each topic lists what you need first and what it unlocks.

## Right Triangle Trigonometry

- [Basic Ratios](https://manyspace.aporia.systems/topics/basic-ratios-mth-trig-064)
- [Solving Right Triangles](https://manyspace.aporia.systems/topics/solving-right-triangles-mth-trig-065)
- [Law of Sines & Law of Cosines](https://manyspace.aporia.systems/topics/law-of-sines-law-of-cosines-mth-trig-066)

## Unit Circle & Graphs

- [Radian Measure](https://manyspace.aporia.systems/topics/radian-measure-mth-trig-067)
- [Unit Circle](https://manyspace.aporia.systems/topics/unit-circle-mth-trig-068)
- [Graphs of Trigonometric Functions](https://manyspace.aporia.systems/topics/graphs-of-trigonometric-functions-mth-trig-069)

## Identities & Equations

- [Fundamental Identities](https://manyspace.aporia.systems/topics/fundamental-identities-mth-trig-070)
- [Sum, Difference & Double-Angle Formulas](https://manyspace.aporia.systems/topics/sum-difference-double-angle-formulas-mth-trig-071)
- [Verifying Identities](https://manyspace.aporia.systems/topics/verifying-identities-mth-trig-072)
- [Trigonometric Equations](https://manyspace.aporia.systems/topics/trigonometric-equations-mth-trig-073)

## Applications

- [Trigonometry in Vectors](https://manyspace.aporia.systems/topics/trigonometry-in-vectors-mth-trig-074)
- [Periodic Modeling](https://manyspace.aporia.systems/topics/periodic-modeling-mth-trig-075)
- [Polar Coordinates Intro](https://manyspace.aporia.systems/topics/polar-coordinates-intro-mth-trig-076)