Question 1209635
<pre>
{{{sin(2theta)*cos(theta) + cos(2theta)*sin(theta)}}}{{{""=""}}}{{{sin(4theta)*cos(theta) - cos(4theta)*sin(theta)}}}

Use the identities:

{{{sin(A +- B)}}}{{{""=""}}}{{{sin(A)cos(B) +- cos(A)sin(B)}}}

{{{sin(2theta+theta)}}}{{{""=""}}}{{{sin(4theta-theta)}}}

{{{sin(3theta)}}}{{{""=""}}}{{{sin(3theta)}}}

Edwin</pre>