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KAYELLEBEE SparkPoints: (14,318)
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9/30/12 7:31 A

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once you calculate the angle at each point of the triangle, cut the end of a given piece of wood at half that angle (i.e. if the angle is 30 degrees, cut the two joining pieces of wood at 15 degree angles to satisfy your requirements).

Just take five minutes to regroup, and don't ever forget to make time for what makes you happy.


KAYELLEBEE SparkPoints: (14,318)
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9/30/12 7:28 A

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is one of the angles a right angle? That's the only way to validate the Pythagorean Theorem if you're calculating the length of an unknown side.

To find any angle if all sides' dimensions are known, use the law of cosines:
http://en.wikipedia.org/wiki/Law_of_cosi
nes


Just take five minutes to regroup, and don't ever forget to make time for what makes you happy.


PSYCHOJULES's Photo PSYCHOJULES Posts: 13,636
9/27/12 6:21 P

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Naturally my construction streak is ended after only a few hours with the need to clarify and figure out angles. Mathematics is a harsh mistress to me.

I do remember pythagoras and the pythagorean theorem, which is always helpful, though i gotta remind myself how to configure the radical numbers to something useful...like inches.

Unfortunately, i can't remember how to find the angles in the triangle once you've got the lengths figured out. I will have to cut the wood at an angle to make it fit snug against the braces, and to do that i need to know the correct angles to cut in each piece.

Do you guys know a good way to find that out, or a webpage you can recommend? my construction guides and textbooks aren't much help. i'm amazed that i can't find how to calculate the angles in the right triangle after.

any help would be awesome. my example i'm trying to configure now is a=8, b=4, and c is that weird radical number that drives me nuts. I just can't find the angles to figure how to cut the wood. ugh. but once i get that, i can calculate all the wood cuts and get those done with today and tomorrow so i can be a sawing and nailing fool for the next week.

Thanks in advance.

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