About This Set

Set 1 checks the first step of every topic in the chapter, with one or two lines of working per question. Most marks here go on small things: the values of sin⁡60∘\sin 60^\circ and cos⁡60∘\cos 60^\circ swapped, 13\frac{1}{\sqrt{3}} read as the tangent of the wrong angle, a ratio taken from the wrong corner of the triangle, or a minus sign lost in the second quadrant. Allow about 25 minutes. If 20 or more are right, go on to Practice Set 2; if not, reread the section behind each question you missed.