Physically i would plot ysinxquad 0le xle 2pi and measure line length. On the discrete level conditioning is possible only if the condition is of nonzero probability one cannot divide by zero. I think part of the answer.
How To Find Series Expansion Of The Inverse Trigonometric Functions
Einfuhrung integration die integration bestimmt den flacheninhalt der flache die zwischen einem von einer funktion bestimmten kurvenzug und der x achse.
This page contains a summary of all of the basic trigonometric identities that you will need to use in a high school trig class organized by type.