IB Math RevisionExam tip poster: Find every solution (IB Maths AA HL)
A4 portrait. It is drawn in vector form, so it also prints sharply scaled up to A3.
The poster
The maths
A common mistake the examiners point out: Trigonometric equations: missing solutions (obtuse, general or divided away). What to do instead: Sketch the function over the whole interval and count intersections before solving. Factorise rather than divide by a trig function (dividing loses the solutions where it is zero).