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If points A , B , and C lie on a circle of radius 1, what is

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Kudos [?]: 8 [0], given: 10

Re: Triangle inscribed in circle [#permalink]  03 Oct 2009, 06:12
maratikus wrote:
hgp2k wrote:
maratikus wrote:
You are missing something. B is the correct answer.

Could you please explain how B is correct? I am not able to understand

Based on the sine theorem, BC/sin(BAC)=2*R -> BC = sin(30 degrees)*2*R = (1/2)*2*1=1

Does GMAT testers expect the test takers to know SIN, COS and TAN formulas ?
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Re: Triangle inscribed in circle   [#permalink] 03 Oct 2009, 06:12
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