1. ## integrating..

Hi,

how do you go about integrating this:

sin(t)*cos(n*t) with respect to t?

Thanks

2. $
\sin (x)\cos (y) = \frac{{\sin \left( {x - y} \right) + \sin \left( {x + y} \right)}}
{2}
$

can you continue?

3. Well, assuming n is a constant, then use this rule to split the integral up into something more manageable.

$
\sin (mx)\cos (nx) = \frac{1}
{2}\left[ {\sin (m - n)x + \sin (m + n)x} \right]
$

Let m=1 and n=n.

4. thank you guys.. i can do it now!