5.4 Double-Angle Identities

54 double angle identities

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Unformatted text preview: Double-Angle Identities Section 5.4 Double Angle Identities Double sin 2 x = 2sin x cos x cos 2 x = cos x − sin x 2 cos 2 x = 2 cos x − 1 2 cos 2 x = 1 − 2sin x 2 2 2 tan x tan 2 x = 2 1 − tan x Joke Time Joke Why do bees have sticky hair? Because they have honeycombs! What goes Oh! Oh! Oh!? Santa Clause walking backwards...
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This note was uploaded on 12/01/2011 for the course MATH 111 taught by Professor Stuff during the Winter '11 term at BYU.

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