Students learn how to visualise and sketch the Sine, Cosine and Tangent graphs. They use these graphs to find all the solutions to trigonometric equations. Learning progresses from this to finding the exact solutions to Sine, Cos and Tan of 30, 45, 60 and 90 using an equilateral and right-angled triangle.
How to introduce the sin, cos and tan trigonometric identities.
How to teach calculating the original amount after a percentage change.
The importance of the range when comparing comparing datasets.