If $s(x)=\sin (3 x)+\sin (4 x)$ , Then $s(x)$ Can Also Be Written in the Form

Short Answer

If $s(x)=\sin (3 x)+\sin (4 x)$ , then $s(x)$ can also be written in the form
$s(x)=$ ---------- $\sin ($ -------------- $x)(\cos$ ---------- $x)$ .