Trigonometry (from Greek words "trigΕnon" and "metron") is a branch of mathematics that explores trigonometric functions and their applications in geometry, such as relationships between the sides and angles of triangles. Trigonometry originated from the geometric applications of the 3rd century BCE (Hellenistic period), particularly in astronomy.
- Trigonometric Functions
- Trigonometric Identities
- Sum and Difference Formulas
- Double Angle Formulas
- Half-Angle Formulas
- Trigonometric Functions of Negative Angles
- Values ββof Trigonometric Functions
- Trigonometry Calculator
Trigonometry FAQ
What is trigonometry?
Trigonometry studies the relationships between the sides and angles of triangles.
What formulas are covered here?
This page links to core trigonometric formulas, identities, and angle formulas used in triangle calculations.
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