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sin2x+cos x=cos x(2sinx+1)

0 votes

i need this to be verified please

trigonometric-identities

asked Nov 30, 2013 in TRIGONOMETRY by futai Scholar

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1 Answer

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We know that sin2A = 2sinA cosA

left hand side = sin2x+cosx

= 2sinxcosx +cosx

= cosx(2sinx+1)

= right hand side

answered Nov 30, 2013 by william Mentor

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