• May 27th 2009, 03:32 AM
acevipa
Hi, I'm not really too sure where to post this question, but I need some advice or some strategies on how to approach problem solving questions in the pdf below. If anyone knows any good techniques or has any advice, that would be greatly appreciated. Thanks.

http://cos.anu.edu.au/News/2008/07cross_sample.pdf
• May 27th 2009, 04:47 AM
VonNemo19
Start with the easy ones that don't require prerequisite knowlege of other questions, e.g.:

2 across= $\tan{(2a)}=1\Longleftrightarrow\arctan{(1)}=2a\Lon gleftrightarrow{a}=\frac{\pi}{8}$

Now you have not only an answer, but a clue to all problems that have 2a in them.