This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== Arc Cosine ====== ==== acos( a ) ==== Return the arc cosine of a. === Description === <code>acos( a )</code> Return the arc cosine of a in radians. === Parameters === | ''a'' | Value [-1 to +1] | === Return value === arc cosine of a === Example usage === <code>acos( 1 )</code> Returns 0. ezeio2/expref/acos.txt Last modified: 2019-09-02 18:46by andreh Log In