9 Trigonometry

Use of sine, cosine and tangent of angles up to 180° Angles will be measured in degrees and decimals of a degree

Solution of problems in two and three dimensions by calculation and by drawing Use of the sine and cosine rule Area of a triangle = ¹⁄₂ab sin C Questions on latitude and longitude will not be set Calculations of the angle between two planes, or of the angle between a straight line and a plane will not be set

Angles of elevation and depression Angles will be given in degrees and decimals of a degree

Bearings The normal convention of bearings being measured clockwise will be adopted