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2 years ago

9

Which of the following expression is equivalent to sin(5x) ?

2 answers:

RSB [31]2 years ago

5 0

$Use:\\sin(x+y)=sinxcosy+sinycosx\\-------------------------\\sin5x=sin(3x+2x)=sin3xcos2x+sin2xcos3x\\\\Answer:e)$

castortr0y [4]2 years ago

3 0

Sin(5x)
=sin(3x+2x)
=sin3xcos2x+cos2xsin3x

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