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Mathematics · Measurement & Trigonometry
Trig Side Solver, Years 9–10
Students identify the known and unknown sides of a right triangle, choose sine, cosine or tangent, and calculate missing side lengths with guided feedback. The full interactive is available to licensed Education Universe users.
Years 9–10Explorer
Learning outcomes
- Choose the correct trigonometric ratio for a problem.
- Calculate an unknown side of a right triangle.
- Check answers for reasonableness.
Teaching guidance
Ask students to justify their choice of ratio before they calculate.
Use Trig Side Solver with your class
Start a free 30-day trial with class codes and progress tracking, or talk to us about your school's licence.
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Trig Side Solver is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.