Trig graphs using spaghetti – PDF – A great lesson plan that develops understanding. This particular version includes student worksheets. Here is a different version and a video showing it in action.
Solving simple trig equations – Powerpoint – Using knowledge of graphs to solve simple equations.
Solving trig equations radians – Powerpoint – Solving equations where solutions are in radians
Solving further trig equations – Powerpoint – Solving equations involving the tan function. Also method for trickier equations.
Using identities – Powerpoint – Using identities to solve equations.
The videos below are by ExamSolutions. Visit his website here for more videos.