Double Angle Formula Flashcards by Dan Wright | Brainscape

Q

Sin2x

A

2sinxcosx

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Q

Cos2x

A

Cos^2(x) - sin^2(x)
2cos^2(x) - 1
1 - 2sin^2(x)

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Q

Tan2x

A

2tanx / 1 - tan^2(x)

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