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Analytical Geometry

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18 May 2012 07:19:28 IST

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Tangent and normal.

Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Analytical Geometry

The hyperbola's tangent line is y=mx+(a^2m^2-b^2)^1/2 on point (a sec @,b tan@) then @=???????????????????.

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Vikram Saxena

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Joined: 1 Apr 2007

Posts: 4025

18 May 2012 22:05:53 IST

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tangent at the point asec@,btan@ is given by :--

xsec@/a+ytan@/b = 1

and on comparing thesetwo equations we get

cos@=

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