Chapter 10 Flashcards by Jessica Brooks

Q

Cos (alpha-beta)

A

CosACosB + SinASinB

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Q

Sin (alpha+beta)

A

SinACosB + CosASinB

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Q

Sin (alpha-beta)

A

SinACosB - CosASinB

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Q

Cos (alpha+beta)

A

CosACosB - SinASinB

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Q

Tan (alpha+beta)

A

(Tanalpha+tanbeta)/1-tanalpha*tanbeta

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Q

Tan (alpha-beta)

A

(Tanalpha-tanbeta)/1+tanalpha*tanbeta

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Q

Sin 2alpha

A

2sinalphacosalpha

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Q

Cos 2alpha (3)

A

Cos^2a - sin^2a
2cos^2a-1
1-2sin^2a

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Q

Tan 2alpha

A

2tana/1-tan^2a

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Q

Sin a/2

A

+/- square root of 1-cosa/2

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Q

Cos a/2

A

+/- square root of 1+cosa/2

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Q

Tan a/2

A

+/- square root of (1-cosa)/(1+cosa)

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