Double Angle Formulae Flashcards

(5 cards)

1
Q

Sin 2A

A

2 sin A cos A

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2
Q

Tan 2A

A

( 2 tan A )/ 1-tan^2 A

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3
Q

Cos 2A

A

Cos^2 A - sin^2 A

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4
Q

Cos 2A

A

2 cos ^ 2A -1

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5
Q

Cos 2 A

A

1 - 2 sin^2 A

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