Students ...use trigonometric ratios to solve problems involving right-angled triangles (Year 9, Mathematics, Australian Curriculum).

These PowerPoint lessons teach the key pre-learning required to be successful in applying the trigonometric ratios to right-triangles. It also includes recap warm-ups, structured PowerPoint lessons and opportunities for students to engage through I Do, We Do, You Do lesson structures.

This PowerPoint can be used as a standalone resource or used alongside the Trigonometry Pre-Learning Checklist Scaffold. These resources can be purchased in the linked bundle. Furthermore, these lessons from the beginning of the wider Trigonometry Unit, which can be purchased in the linked bundle.

Learning Intention:

• Students understand that unknown side lengths and angles of right triangles, can be calculated using Trigonometry.

Success Criteria:

•I can explain the difference between Pythagoras’ Theorem and Trigonometry.

•I can identify the key information required to apply trigonometry to find unknown sides and angles.

This is an editable resource and can be adjusted to suit your needs and classroom contexts.

Key Content:

- What is Trigonometry?

- How does it differ from Pythagoras' Theorem?

- What is theta?

- How do you label the hypotenuse, adjacent and opposite sides of right-triangle correctly?

- What are the trigonometric ratios - sine, cosine and tangent?

- How do I rearrange the trigonometric ratios to solve for unknowns.