# Math Help - triangle help...

1. ## triangle help...

right I'm doing the following:

I've used the soh cah toa thingy to find the sin and cos of 45- I got both as 1/sqrt(2) however in the answers it says that they are both sqrt(2)/2. Strangely enough, all the other answers match.

2. That's because $\frac 1 {\sqrt 2} = \frac {\sqrt 2}{2}$.

Prove it by multiplying top and bottom by $\sqrt 2$.

3. cool thanks mister!

4. ... feel free to hit the "Thanks" button next to my post, if you so wish, and in the thread tools up the top there's an option to set this thread as "Solved".