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Is the formula sin2X+2sinX=0 valid?
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5 votes
Is the formula sin2X+2sinX=0 valid?

User Goppinath
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1 Answer

4 votes
no is not valid because according to trig identities sin2x is 2sinxcosx
so 2sinxcosx+2sinx=2sinx(cosx+1)
Hopes this loves.
User Lyth
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