robmoore11p6mekr robmoore11p6mekr

03-04-2018
Mathematics

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is the formula sin2X+2sinX=0 valid?

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popalabdulqayou popalabdulqayou

03-04-2018

no is not valid because according to trig identities sin2x is 2sinxcosx
so 2sinxcosx+2sinx=2sinx(cosx+1)
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