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Darkie
04-12-2007, 03:25
I'm having some trouble with this, and I'm sure it is fairly simple, but this is the problem:

To find the distance AB across a river, a distance BC = 429 m is laid off on one side of the river. It is found that B = 103.6° and C = 14.6°. Find AB.

Honestly, I don't even really know where to start. The 'laid off on one side of the river' confuses me. But any help would really be appreciated, thanks.

WzWz
04-12-2007, 03:32
Law of Sines.

AeroJonesy
04-12-2007, 03:32
It's a triangle problem. See if you can draw the triangle.

Gibbzilla
04-12-2007, 03:34
My best math days are beyond me. :wink:

DurfBarian
04-12-2007, 03:37
"B" means angle ABC, and "C" means angle BCA. Lookie here:

http://homepage.mac.com/durf/pix/river-problem.png

Darkie
04-12-2007, 03:41
Ahh, it was that simple. Thanks a lot guys. I got it now.

Dondrei
04-12-2007, 09:40
I didn't really get the "laid off on" part either, I just guessed what they meant.