Category Archives: Year 9

Trigonometry: Ratios

Key concepts: Use the sine, cosine and tangent ratios to solve to solve problems involving right-angled triangles. While the equations can be solved by other methods, NumSolve is encouraged here and an extension is to save the formulae in an eActivity. This is a particularly useful approach where students are finding the algebraic methods for solving the equations taking up a lot of time.
Apps: NumSolve, eActivity
Activity
Solution