Trig Identities Flashcards by Z H | Brainscape

Q

Cos²(x)

A

1/2(1+cos(2x))

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Q

sin²(x)

A

1/2(1-cos(2x))

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Q

cos(A+B)

A

cosAcosB-sinAsinB

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Q

sin(A+B)

A

sinAcosB+cosAsinB

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Q

A

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