Omnimaga
General Discussion => Other Discussions => Math and Science => Topic started by: turiqwalrus on April 08, 2011, 01:08:03 pm
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this problem was not solved by the entire math department!
can any of you? if you can, please show work.
thanks
I got 18.088
EDIT: find the bottom chord
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What are we trying to find?
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the chord that runs along the bottom.
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the form reminds me of the donkey hatO_o
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Is that a right-angle symbol in the top right triangle? And is that entire line 8 or what?
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Is that a right-angle symbol in the top right triangle?
yes.
And is that entire line 8 or what?
no. the 8 is the segment
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May we assume that the intersection of all of the triangles is the center of the circle?
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yes.
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To be honest, it's unsolvable without making further assumptions or having more information. Here's the solution given all of the information available. Note that B is the angle of the upper undefined arc and A is the angle of the lower undefined arc that includes the secant we're trying to solve for.
Given Kâ10.4432583147
20.56920350997â(2(K2)-4K*Cos(A))+(2(K2)-4K*Cos(B))
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Three possible interpretations:
Radius is 8/sin(50) about 10.4432583147 = R
1) There is no upper part. Answer is 2sin(80)R = 20.5692
2) The perpendicular is an extension to the other side of the triangle. Answer is 2sin(65)R = 18.9296
3) The sides are extensions to each other. Answer is 2sin(40)R = 13.4256
Basically, the answer is 2R*sin(A/2) where A is the vertex angle of the bottom triangle.
It's underconstrained.
EDIT: By reverse-engineering your answer (@OP), it appears that you assume that the angle at the bottom is 120 degrees.
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yeah... I just noticed that :P
it's unsolvable without more information
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next time please think a bit on how to solve the problem before wastin my time.
i spent like 7+ years on it and ended up completley FAILING!
if you think about it for just 7 nano sconds you\'ll notice that it is wrong.
dunt be like gabriel carol and make wrong asummptions about polygons.
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hullo there, you, and welcome. you should introduce yourself via the board created for that purpose =D
you should also read the rules (http://www.omnimaga.org/index.php?action=ezportal;sa=page;p=2), particularly the first,
Innapropriate content and actions include, but are not limited to, the following:
1: Flaming, bigotry, trolling or any other provocative comment aimed toward an user or group of users.
, and next time please think a bit on how to properly voice your opinion without resorting to hyperbola aimed at rebutting a fellow member. he may have posted without having thought it through properly beforehand, but he also went on to admit this fact and does not need to be reminded of his mistake again, particularly in an insulting manner.
we hope you enjoy your stay here ;)
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next time please think a bit on how to solve the problem before wastin my time.
i spent like 7+ years on it and ended up completley FAILING!
if you think about it for just 7 nano sconds you\'ll notice that it is wrong.
dunt be like gabriel carol and make wrong asummptions about polygons.
You should definitely read the rules, like shmibs said, and that was a very rude comment. Please apologize to Freyaday.
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next time please think a bit on how to solve the problem before wastin my time.
i spent like 7+ years on it and ended up completley FAILING!
if you think about it for just 7 nano sconds you\'ll notice that it is wrong.
dunt be like gabriel carol and make wrong asummptions about polygons.
You should definitely read the rules, like shmibs said, and that was a very rude comment. Please apologize to Freyaday.
to Freyaday? he was ranting about me...
next time please think a bit on how to solve the problem before wastin my time.
i spent like 7+ years on it and ended up completley FAILING!
if you think about it for just 7 nano sconds you\'ll notice that it is wrong.
if it took 7+ years, how can you figure out that it's wrong in 7 nanoseconds?
dunt be like gabriel carol and make wrong asummptions about polygons.
who is gabriel carol anyways ???
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Now now everyone, let's not feed the troll.
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he does seem to be a troll, judging from his post consistency...
He also seems to mainly be a gamer, judging from the fact that ~1/2 of his posts are in gaming discussion :P
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That said if he's effectively a troll, even if he's the hit-n-run type that tries to not troll too often and ignore topics after he trolls in them, this time there won't be a difference between that and people who trolls consistently, since ignoring warnings can also result in a ban now, anyway :P. Otherwise he might just be a younger user who is new to forums. Quite ironic, though, that most trolls we got posts a lot in the math section and has the same grammar structure. :P