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Rahul Karmakar (72)

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tan2x= sec2x - 1  TRIGNOMETRIC IDENTITY

integral of sec^2x = tanx
of 1 = x

Answer is tanx - x

ACCEPT THE UNEXCEPTED <TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0"> <TR><TD> <DIV ALIGN="right">Animated Letters</DIV></TD></TR></TABLE>
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