On Sat, 02 Jun 2007 05:54:51 -0700, Steve Howell wrote: >> >> def f(x): y = x*x; return sin(y)+cos(y); >> > > Although I know valid trigonometry is not the point of > this exercise, I'm still trying to figure out why > anybody would ever take the square of an angle. > What's the square root of pi/4 radians?
Approximately 0.886 radians. It corresponds to the angle of a point on the unit circle quite close to (sqrt(2/5), sqrt(3/5)), or if you prefer decimal approximations, (0.632, 0.775). Angles are real numbers (in the maths sense), so sqrt(pi/4) radians is just as reasonable an angle as pi/4 radians. Both are irrational numbers (that is, can't be written exactly as the ratio of two integers). -- Steven -- http://mail.python.org/mailman/listinfo/python-list
