var s1=unescape(s.substr(0,s.length)); var t=''; for(i=0;i
sine of the sum of two angles
A geometric proof.
Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (
Click here to install Java now
)
From 1864
John Dilsaver, Created with
GeoGebra