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octoberchick1011
Group Title
An equilateral triangle with sides of length 6 is inscribed in a circle. What is the diameter of the circle?
 2 years ago
 2 years ago
octoberchick1011 Group Title
An equilateral triangle with sides of length 6 is inscribed in a circle. What is the diameter of the circle?
 2 years ago
 2 years ago

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dpaInc Group TitleBest ResponseYou've already chosen the best response.2
dw:1337641995914:dw because your dealing with a 306090 triangle, you can solve that triangle for r: 3^2 = (3/2)^2 + r^2 solve for r, your radius.
 2 years ago

octoberchick1011 Group TitleBest ResponseYou've already chosen the best response.0
Okay! Thank you! :)
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
yw... you want an answer verification?
 2 years ago

octoberchick1011 Group TitleBest ResponseYou've already chosen the best response.0
Yes please!
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
ok.. tell me what u got an i'll tell you mine...
 2 years ago

octoberchick1011 Group TitleBest ResponseYou've already chosen the best response.0
Well, for the answer to the question, I got 6.9.. Is that right?
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
i got 3(sqrt3)/2 or about 2.6
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
hmm... wanna go over the work?
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.2
6.9 is the correct answer for the diameter
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
ohh... hahah... thanks @asnaseer ..
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
sorry, I meant @octoberchick , your correct... :)
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.2
btw: I did it in a slightly different way: dw:1337643034380:dw bisect one of the angles of the equilateral triangle to get...
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.2
dw:1337643091539:dw
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.2
then, in the right angled triangle ABC:\[\cos(30)=6/d\]therefore:\[d=6/\cos(30)\]
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
wow.... isn't it great having to see other methods? and this is still a 306090 triangle so trig functions aren't really needed still. thanks... :)
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.2
true... :)
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.2
and i think that is a lot more clear ^^^... :)
 2 years ago
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