Odd Values for Rotation...
 

Having setup my first character, I've run into some problems. Whenever I try to rotate joints to certain multiples of 3 ( 6, 12, 15, 24 ... ) , Maya will add or subtract 0.0000000000000001 from the rotation, and it simply won't let me use exactly 6/12/14/24/... degrees.
What causes this? Might it be something with an easy fix?