Insert a new line in TeXShop

Mantaray

I'm having the following problem in TeXShop - how can I put two equations in two separate lines?
Thus far I have something like:

But I still get the two on the same line..
Help would be very much appreciated

Simon_Tyler

You need to use one of the multiline environments.
The most basic of which is array (used inside \[\])
The best is probably (as long as you're using the amsmath package)
where the ampersands (&) are alignment markers.
This produces
[tex]\begin{align}
p_y &= s \cos \alpha \\
p_x &= s \sin \alpha
\end{align}[/tex]

For more details see
http://en.wikibooks.org/wiki/LaTeX/Mathematics
and
http://en.wikibooks.org/wiki/LaTeX/Advanced_Mathematics

Mantaray

Many thanks!