Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)
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Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)

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Subject Math
Grade Level Grades 6-12
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Proof of the trig identity sin(a+b) = (cos a)(sin b) + (sin a)(cos b)

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Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)

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