C3 Trigonometric Identities

Sarah H-V
Flashcards by Sarah H-V, updated more than 1 year ago
Sarah H-V
Created by Sarah H-V over 6 years ago
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Description

A Levels Maths Flashcards on C3 Trigonometric Identities, created by Sarah H-V on 02/02/2015.

Resource summary

Question Answer
sin ( A + B ) sinA cosB - sinB cosA
sin ( A - B ) sinA cosB + sinB cosA
cos ( A + B ) cosA cosB - sinA sinB
cos ( A - B ) cosA cosB - sinA sinB
tan ( A + B )
identity involving sin ^2 and cos ^2 sin ^2 x + cos ^2 x = 1
identity involving tan ^2 and sec ^2 tan ^2 x + 1 = sec ^2 x
identity involving cot ^2 and cosec ^2 1 + cot ^2 x = cosec ^2 x
sin 2A 2 sinA sinB
cos 2A cos ^2 A - sin ^2 A or 1 - 2 sin ^2 A or 2 cos ^2 A - 1
tan 2A
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