Learn about the Story of Trigonometry
Use the Mathigon Timeline to find ‘Hipparchus’. Hipparchus was the mathematician who first wrote about the relationship between a chord and an arc on a circle, giving rise to the story of trigonometry. Read a condensed history of trigonometry in this article written by David Joyce at Clark University.
Pencil and paper practice

Corbett Maths Pythagorean Theorem
Corbett Maths Right Angle Triangle Trigonometry
Tentotwelvemath Grade 10 Trigonometry Review 2024, Review Solutions
Online Practice
Transum Math Pythagoras’ Theorem
Transum Math Trigonometry
Tentotwelvemath Estimate angles/sides on Triangles
Tentotwelvemath Estimate sine, cosine, tangent from triangle
Tentotwelvemath Estimate angles and sides practice
Tentotwelvemath game Estimate sine, cosine tangent: Team A Team B; Teacher Vs Student; Solo
Tentotwelvemath Pythagoras’ Theorem
Tentotwelvemath SOH CAH TOA for Angle
Tentotwelvemath SOH CAH TOA for Side
Explore SOH CAH TOA Concepts
Tentotwelvemath Triangle Hypotenuse 1
Tentotwelvemath Sine, Cosine, Tangent 0 – 90
Tentotwelvemath Ordering sine, cosine, tangent
GeoGebra Author Visual for Proving the Pythagorean Theorem
Assess the application of SOH CAH TOA
Tentotwelvemath Practice Quiz on Right angled triangles
Tentotwelvemath Quiz on Right angled triangles
