Double-Angle Formula Flashcards by Matthew Sato

Q

sin(2x)

A

2sin(x)cos(x)

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Q

cos(2x)

A

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

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Q

tan(2x)

A

[2tan(x)]/[1-tan(x)^2]

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