Double Angle Formulas Flashcards by Thomas Newall | Brainscape

Q

Sin 2A

A

= 2sinA .cos A

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Q

Cos 2A 1)

A

Cos^2 A - sin^2A

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Q

Cos 2A 2)

A

2cos^ A - 1

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Q

Cos 2A 3)

A

1 - 2sin^A

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Q

Tan 2A

A

2tanA
———-
1 - tan^A

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