Difference between revisions of "1961 IMO Problems/Problem 5"

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==Problem==
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Construct a triangle ''ABC'' if the following elements are given: <math>AC = b, AB = c</math>, and <math>\angle AMB = \omega \left(\omega < 90^{\circ}\right)</math> where ''M'' is the midpoint of ''BC''.  Prove that the construction has a solution if and only if  
 
Construct a triangle ''ABC'' if the following elements are given: <math>AC = b, AB = c</math>, and <math>\angle AMB = \omega \left(\omega < 90^{\circ}\right)</math> where ''M'' is the midpoint of ''BC''.  Prove that the construction has a solution if and only if  
  
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In what case does equality hold?
 
In what case does equality hold?
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==Solution==
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{{solution}}
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==See Also==
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[[1961 IMO Problems]]

Revision as of 10:34, 12 October 2007

Problem

Construct a triangle ABC if the following elements are given: $AC = b, AB = c$, and $\angle AMB = \omega \left(\omega < 90^{\circ}\right)$ where M is the midpoint of BC. Prove that the construction has a solution if and only if

$b \tan{\frac{\omega}{2}} \le c < b$

In what case does equality hold?


Solution

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See Also

1961 IMO Problems