hernandezeileen20 hernandezeileen20

08-03-2019
Mathematics

contestada

Sin a ______ = 1/2 [ sin ( a + b ) + sin ( a - b) ]

Sin a 12 sin a b sin a b class=

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bhawnau233 bhawnau233

14-03-2019

Answer:

Cos b

Step-by-step explanation:

1/2[sin(a+b)+sin(a-b)]

1/2[sin a cos b +cos a sin b + sin A cos B - cos A sin B]

1/2[2sin a cos b]

sin a cos b

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