Practice
Right Triangle Trigonometry Practice Problems With Answers
Thirty right triangle trigonometry practice problems at three levels, from SOHCAHTOA basics to multi-step word problems, each with a full worked solution.
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Guides & tutorials
Worked explanations of the geometry behind the calculator - written for people who want to understand the result, not just copy it.
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Special Triangles
Special Right Triangles Explained: 30-60-90 vs 45-45-90
Special right triangles compared: 30-60-90 sides sit in the ratio 1 : √3 : 2, 45-45-90 in 1 : 1 : √2. Tables, worked examples and how to tell them apart.
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Pythagorean Theorem
Pythagorean Theorem Word Problems: 20 Real-World Examples
Twenty Pythagorean theorem word problems solved in full: ladders, room and screen diagonals, ramps, guy wires and navigation, with units and rounding shown.
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