Double Angle Identities Flashcards by Daryan Fisher

Q

sin 2x

A

2 sin x cos x

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Q

Cos 2x # 1

A

cos ^2x - sin ^2x

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Q

Cos 2x # 2

A

2 cos^2-1

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Q

Cos 2x #3

A

1- 2sin^2x

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