L leelee New member Joined Sep 19, 2005 Messages 1 Sep 19, 2005 #1 need help with this problem: verify sin3+sin cos2=sin, by starting with the left hand side of the equality and obtaining the right hand side.
need help with this problem: verify sin3+sin cos2=sin, by starting with the left hand side of the equality and obtaining the right hand side.
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,325 Sep 19, 2005 #2 Factor out sin(x). This leaves sin(x) * {stuff} = sin(x). I wonder what the "stuff" is.
