So here is the solution to the Trig Identities question I posted yesterday. I’d imagine this question was a surprise to many who sat the paper but shows the importance of seeing as many types of question as possible.

A reminders that subscribers can find the following LCHL Trigonometry content in the folders.

1. Trigonometry Revision Sheet

2. Trigonometric Proofs Pack

3. Trigonometric Functions – Real World Context

4. Trigonometric Functions and Graphs – No Real World Context

5. Trigonometry – Equations and Identities

6. Trigonometry – Solving Triangles

and in the Trigonometry EXTRA folder…

7. Trigonometry – Identities and Equations EXTRA

8. Trigonometry – Sectors and Arcs

9. Trigonometry – Solving Triangles EXTRA

10. Trigonometry – Trigonometric Equations