For find the tangent line and the normal line passing through

So i think the tangent line is

However Im clueless as to how to find the normal line.

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- Jan 13th 2012, 06:25 AMmaxgunn555Finding Tangent Line and Normal of a parametric equation
For find the tangent line and the normal line passing through

So i think the tangent line is

However Im clueless as to how to find the normal line. - Jan 13th 2012, 07:12 AMmaxgunn555Re: Finding Tangent Line and Normal of a parametric equation
it's ok apparently, after pluggin in the to into the tangent equation to get Tdelta(to) = (x,y)s + (a,b) the normal line is simply Ndelta(to) = (-y,x)s + (a,b).

ps it was meant to say deltaR rightarrow R to the power of 2 not that weird symbol. - Jan 14th 2012, 08:02 AMHallsofIvyRe: Finding Tangent Line and Normal of a parametric equation
will be a two dimensional vector- the normal will be perpendicular to that so you just need a vector perpendicular to . In two dimensions, that's easy. A normal to the vector <a, b> is <b, -a>.