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Simplify sin(2x+7y)+sin(2x-7y)

Simplify sin(2x+7y)+sin(2x-7y)
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2 votes
Simplify sin(2x+7y)+sin(2x-7y)

asked
User Febian Shah
by
8.3k points

1 Answer

2 votes
sin(a+b)=sin a * cos b + sin b cos a
sin(a-b)=sin a * cos b - sin b cos a
answered
User Myles Eftos
by
7.6k points
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