The 1st hill........north of 1 on the x axis.......where the pole to infinity is................is just under 10........at 9.99 or something...

Radians Preferred by Mathematicians

Because the radian is based on the pure idea of "the radius being laid along the circumference", it often gives simple and natural results when used in mathematics.
For example, look at the sine function for very small values:

x (radians)	1	0.1	0.01	0.001
sin(x)	0.8414710	0.0998334	0.0099998	0.0009999998

For very small values. "x" and "sin(x)" are almost the same
(as long as "x" is in Radians!)