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A-Level Mathematics AQA

Trignometric Identities

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Sin2A

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Math

A-Level Mathematics

AQA

The ones that aren't given in the formula book

6 Terms

1

Sin2A

2SinACosA

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2

Cos2A

Cos²A - Sin²A

or

2Cos²A - 1

or

1 - 2sin²A

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3

Tan2A

(2TanA)

(1 - Tan²A)

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4

Sin²x + Cos²x =

1

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5

Sec²x =

Tan²x + 1

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6

Cosec²x =

1 + Cot²x

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