National 5 Working with the graphs of trigonometric functions Example Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points.

Solve trigonometric equations in Higher Maths using the double angle formulae, wave function, addition formulae and trig identities.

Interestingly enough, the trigonometric functions that define those relationships are also closely tied to circles. Needless to say, this makes trig one of the hardest topics in math for students ...