IGCSE Maths Specification

Edexcel A 4MA1

Section 4.8: Trigonometry and Pythagoras’ theorem

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#4.8A

know, understand and use Pythagoras’ theorem in two dimensions

#4.8B

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

#4.8C

apply trigonometrical methods to solve problems in two dimensions

To include bearings

#4.8D

understand and use sine, cosine and tangent of obtuse angles

#4.8E

understand and use angles of elevation and depression

#4.8F

understand and use the sine and cosine rules for any triangle

#4.8G

use Pythagoras’ theorem in three dimensions

#4.8H

understand and use the formula \(\dfrac{1}{2}ab\sin{C}\) for the area of a triangle

#4.8I

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