identities trig unit quiz Flashcards by Carrington Thompson | Brainscape

Q

sin(2a)

A

2sina times cosa

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Q

all identities for cos(2a)

A

cos^2-sin^2
2cos^2-1
1-2sin^2

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Q

tan(2a)

A

(2tana)/(1-tana^2a)

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Q

all identities for cos^2

A

1-sin^2
1/tan^2

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Q

sin^2

A

1-cos^2

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