Tried, tested, free and recommended resources for learning SOH CAH TOA and the Pythagorean theorem:
Online: 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. David Joyce at Clark University tells a condensed version of the story.
Vertical Surfaces exercise. By the time students are in grade 10 they have usually interacted with the Pythagorean theorem at least once before. Question 1, 2 plus one other from 3 – 8 from this vertical surfaces collection (why vertical surfaces?) makes for a good VS exercise at the start of a unit on right angled triangles.
Corbett Math worksheets are excellent for student-directed differentiation. Conveniently, solutions are available through a QR code at the end of each worksheet. Use combinepdf.com to create a single handout.
Corbett Maths Pythagorean Theorem
Corbett Maths Right Angle Triangle Trigonometry
Tentotwelvemath Grade 10 Trigonometry Review
Transum Math Pythagoras’ Theorem
Tentotwelvemath starter Estimating angles/sides on Triangles (starter activity)
Tentotwelvemath starter Estimating sine, cosine, tangent from triangle
Tentotwelvemath Estimating angles and sides practice
Tentotwelvemath Pythagoras’ Theorem
Tentotwelvemath SOH CAH TOA for Angle
Tentotwelvemath SOH CAH TOA for Side
Interactive 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
Interactive Assessment on SOH CAH TOA
Tentotwelvemath Practice Quiz on Pythagoras, SOH CAH TOA
Tentotwelvemath Quiz on Pythagoras, SOH CAH TOA