Trig addition formulas Flashcards by Charlotte Dutt-Whittington

Q

sin(A+-B)

A

sinAcosB+-cosAsinB

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Q

cos(A+-B)

A

cosAcosB-+sinAsinB

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Q

tan(A+-B)

A

tanA+-tanB/
1-+tanAtanB

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Q

sin(2A)

A

2sinAcosA

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Q

cos(2A)

A

cos^2A-sin^2A,

2cos^2A-1

1-2sin^2A

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Q

tan(2A)

A

2tanA/
1-tan^2A

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