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Hi...

I have a particular point on a curve.. This curve isnt a smooth curve.. anyways, i need to draw a tangent at this point.. i have the following information in hand:

1. Point P at which tangent has to be drawn.

2. Length l of the tangent.

Now i want the two end-points of the tangent in such a way that P is the mid-point of these new points.. I dont have equation of the curve. i dont know slope of the tangent..

Is there any way to do this.??

Thanks in advance

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# How to find two endpoints of a line?

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