# Edexcel A-level Mathematics 'Core Mathematics 3 (C3)' Revision

Contains a list of all the formulae you need for the exam, as well as further notes and tips on the Edexcel specification of Core Mathematics 3 (C3).

- Created by: Applequestria
- Created on: 06-07-16 21:01

First 146 words of the document:

Core Mathematics 3

Formulae

Exponentials and Logarithms ln = ln

Trigonometry sin - = - sin

cos - = cos

tan - = - tan

sin = cos ( - )

2

cos = sin ( 2 - )

sin

tan = cos

1

cosec = sin

1

sec = cos

cos 1

cot = sin = tan

sin + cos = 1 sin2 = 1 - cos 2 cos 2 = 1 - sin2

2 2

sec 2 - tan2 = 1 sec 2 = 1 + tan2 tan2 = sec 2 - 1

cosec 2 - cot 2 = 1 cosec 2 = 1 + cot 2 cot 2 = cosec 2 - 1

sin( + ) = sin cos + cos sin

sin( - ) = sin cos - cos sin

cos( + ) = cos cos - sin sin

cos( - ) = cos cos + sin sin

tan +tan 1

tan( + ) = 1-tan tan , ± ( + 2)

tan -tan 1

tan( - ) = , ± ( + )

1+tan tan 2

sin 2 = 2 sin cos

cos 2 = cos2 - sin2 = 2 cos2 - 1 = 1 - 2 sin2

2 tan

tan 2 =

1-tan2

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