Integrate sin2x/sinx dx
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for integration sin2x /sinx...
write sin2x =2sinxcosx
so..sin2x/sinx = 2sinxcosx/sinx =2cosx
now integrate 2cosx =2sinx..ans..
write sin2x =2sinxcosx
so..sin2x/sinx = 2sinxcosx/sinx =2cosx
now integrate 2cosx =2sinx..ans..
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