Transcription of Sum and Difference Identities - Pretty Math
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Sum and Difference Identities - Pretty Math
Quotient Identities sintancos coscotsin Reciprocal Identities 1cscsin 1seccos 1cottan Pythagorean Identities 22sincos1 22tan1 sec 221 cotcsc Even and Odd Identities Sum and Difference Identities cos() cos cossin sin cos() cos cossin sin sin() sin coscos sin sin() sin coscos sin Double-Angle and Half-Angle Identities sin 22sin cos 22cos 2cossin 2cos 21 2sin sinsincoscostantan csccscsecseccotcot 1 cossin221 coscos221 costan21 cos tantantan1 tan tan tantantan1 tan tan 1 cossintan2sin1 cos 2cos 22 cos1 22 tantan 21 tan Write your questions here!
Practice with Sum and Difference Identities Write each expression as the sine, cosine, or tangent of a single angle. _____ 1. cos80°cos20°+sin80°sin20° _____ 2. sin30°cos45°+cos30°sin45° _____ 3. cos20°cos45°−sin20°sin45° _____ 4. …
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