Hi,
do you know what does it mean that connection of line and arc should be tangential?
Gelöst! Gehe zur Lösung
Gelöst von barthbradley. Gehe zur Lösung
how about this explanation: think of an arc as a series of very short line segments. Now take one of those line segments and lengthen it (don't change its angle). That line is tangential to the arc. How did I do?
@barthbradley - let's see if I can do better. When an arc is tangential to a line, it will only intersect the line at ONE point.
Howzat?
or heres another one
looking at the arc - draw a line from the centre of the circle that describes the arc to the place on the arc where you want the tangential line to begin. now construct a line 90 degrees to the radial line at the point where it hits the arc. that line is tangential to the arc.
Bravissimo! How very Euclidean of you, @barthbradley!
@Anonymous: exactly the diagram my high school teacher drew on the blackboard with chalk (I'm dating myself). Good one!
...and talking about "blackboards"....now I'm going off on a tangent. Sorry.
strictly speaking thats not a tangent - as any line will be inside or outside of the circle of the arc no matter how short it is and so what youve described is a very close approximation to an arc..... might not seem like a lot until you want to get to mars.... LOL
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