Calculating exact values for some specific values of sin, cos and tanx:
CAST diagram:
Using the CAST diagram to solve trig equations:
Using the CAST diagram with multiple angles:
Graphing trig functions with phase shifts etc:
How to derive some trig formulae (don’t need the last part on angle addition)
Solving trig identities using quadratic formula:
Factorising to solve trig equations:
Using trig identities to solve equations 1:
Using trig identities to solve equations 2:
Past Paper questions on solving trig equations:
Using Additional Maths trig identities for proof:
Past paper questions for Additional trig (using more complicated identities):