4.8 Trigonometry and Pythagoras’ theorem

know, understand and use Pythagoras’ theorem in two dimensions

know, understand and use sine, cosine and tangent of acute angles to determine lengths and angles of a right-angled triangle

Apply trigonometric methods to solve two-dimensional problems, including bearings.

understand and use sine, cosine and tangent of obtuse angles

understand and use angles of elevation and depression

understand and use the sine and cosine rules for any triangle

use Pythagoras’ theorem in three dimensions

understand and use the formula ½ab sin C for the area of a triangle

apply trigonometrical methods to solve problems in three dimensions, including finding the angle between a line and a plane The angle between two planes will not be required