Solution 3 (c).
Solution. Let be
the angle of inclination of the line . The
slope of the line is and
We are done.
Aside. We can let Mathematica double check our work.
So that .
We are really done.
Aside. We can explore some graphs.
image of the circle under
is the line that passes through the origin.
This solution is complements of the authors.
(c) 2008 John H. Mathews, Russell W. Howell