Trigonometric Ratios
Sine-Cosine-Tangent

By the end of this unit, students will be able to:

• understand and apply Pythagoras’ Theorem to find missing lengths in right-angled triangles;
• use trigonometric ratios (sine, cosine, tangent) to find unknown angles and lengths in right-angled triangles;
• apply these concepts to solve problems involving both 2D and 3D figures.

Curriculum Alignment: Key Stage 4: Geometry and Measures

• apply Pythagoras’ Theorem and trigonometric ratios to find angles and lengths in right-angled triangles {and, where possible, general triangles} in 2 {and 3} dimensional figures