I work with many circles and lines. In this work, I many times have to find where is the tangent point of a circle from a point outside the circle (as the inserted image), which it must be perpendicular to the center of the circle. Of course I can do it by manual calculation, and normally I did it with my spread sheet. But that way quite wasting time as there are many tangent point and also many changes.
What I expect, need one Snap Tangent tool, just line another snap's, especially the Snap Entity or Snap Middle.
Or, did I miss something? Is any way to do that other than manually do the calculation? If any, kindly help me.
Re: Automatic Snap to the Tangent Point of a Circle
I'm not sure if I Have understood your question right.
There is no Snap Tangent, and it wouldn't make much sense. Snap Intersection would be the right choice. But unfortunately there is a bug that the tangent point is not calculated 100% properly during drawing, and so no intersection will be found. As a workaround, in your case with the tangent line ending at the circle, you can use Snap Endpoint.
Or do you want to know how to draw a tangent line from a point at all?
Tools - Line - Tangent (P,C)