00:01
All right, the question we're going to look at today is how do we find the measure of an angle between a circle, a tangent line, and an angle that's created.
00:12
So we're going to start with our circle.
00:14
We're going to call the center of our circle point a, and now we need a line that's tangent to the circle.
00:22
So definition of tangent means that this line is going to touch the circle in only one place.
00:29
Now, we're going to name the couple points on that line.
00:34
We're going to name point b over here, and we're going to name point c over here.
00:40
So again, definition of a tangent line touches a circle only once.
00:44
In addition, it is perpendicular, the radius is perpendicular to that tangent line.
00:51
When that happens, we can draw an angle from a to c to...
01:02
B...
