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what is point of tangency in math. The secant line intersects the graph at point A and B and the tangent line which is parallel to the secant touches the graph at point E. 53 A 1 A 2 The trick to doing this is to introduce variables for the coordinates for one of these points.
B 30 A A 18 S Answers. The secant line intersects the graph at point A and B and the tangent line which is parallel to the secant touches the graph at point E. Like inscribed angles when the vertex is on the circle itself the angle formed is half the measure of the intercepted arc.
For more on this see Tangent to a circle.
The point where the tangent touches the curve is the point of tangency. The key is to find the points of tangency labeled A 1 and A 2 in the next figure. Any help would be appreciated geometry circles tangent-line Share. On the other hand a secant is an extended chord or a straight line which crosses cuts a circle at two distinct points.