Basic Trigonometry: Sine, Cosine, Tangent
Students will define and apply sine, cosine, and tangent ratios to find unknown sides and angles in right-angled triangles.
Key Questions
- Differentiate between the sine, cosine, and tangent ratios based on their relationship to the sides of a right triangle.
- Analyze how the choice of trigonometric ratio depends on the given and unknown information.
- Construct a real-world problem that can be solved using basic trigonometric ratios.
MOE Syllabus Outcomes
Suggested Methodologies
Ready to teach this topic?
Generate a complete, classroom-ready active learning mission in seconds.
Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
rubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
More in Geometry and Trigonometry
Angles and Parallel Lines Review
Students will review fundamental concepts of angles, parallel lines, and transversals, applying theorems to solve problems.
2 methodologies
Properties of Polygons
Students will investigate the sum of interior and exterior angles of polygons and properties of regular polygons.
2 methodologies
Congruence and Similarity
Students will apply congruence and similarity criteria to triangles and other polygons to solve geometric problems.
2 methodologies
Pythagoras Theorem and its Applications
Students will apply the Pythagorean theorem to solve problems involving right-angled triangles in 2D and 3D contexts.
2 methodologies
Area and Volume of Geometric Solids
Students will calculate surface area and volume of prisms, cylinders, pyramids, cones, and spheres.
2 methodologies