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PostPosted: Mon May 17, 2004 11:34 am 
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Joined: Fri May 14, 2004 9:24 pm
Posts: 5
I'm embarassed at how much trouble I have with this simple math:

If I see a spec sheet for a 17" monitor and I know that it is a 16: +/- 9 aspect ratio (1280 x 768 -- a little bit different than "16:9"...), how can I figure out the W & H? Pythagoras has got me as far as figuring out the square of the hypotenuse, but determining the two sides using ratios was impossible!

So, I became a high school student again and went online to learn about sines, cosines and tangents. Boy, the things I didn't learn when I was the right age!

So, since I didn't want to have to do that much figuring again (*that* hasn't changed since I was 17...), I wrote a quick Javascript to help me figure out how wide and how tall any diagonal dimension on a monitor works out to be -- important, as I consider whether a 17" 1280x768 is too small (it is, the great New Egg price notwithstanding).

It's ugly, but functional. If anyone else is wanting to get the same answers that I was, this is my gift to you. If my math is way off, some kind soul should let me know.

http://www.directedmotion.com/monitors/yarc.htm


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PostPosted: Mon May 17, 2004 3:45 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Since what you actually care about is visible area, I'd just get out a ruler and measure. Crude, low tech, inelegant, but quite effective! ;-)


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PostPosted: Mon May 17, 2004 4:56 pm 
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location: Nashville, TN
well 1024x768 is the standard 4x3 aspect ratio.


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