Difference between revisions of "2003 AIME I Problems/Problem 12"
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== Problem == | == Problem == | ||
| + | In convex quadrilateral <math> ABCD, \angle A \cong \angle C, AB = CD = 180, </math> and <math> AD \neq BC. </math> The perimeter of <math> ABCD </math> is 640. Find <math> \lfloor 1000 \cos A \rfloor. </math> (The notation <math> \lfloor x \rfloor </math> means the greatest integer that is less than or equal to <math> x. </math>) | ||
== Solution == | == Solution == | ||
Revision as of 20:10, 6 August 2006
Problem
In convex quadrilateral 
and 
The perimeter of 
is 640. Find 
(The notation 
means the greatest integer that is less than or equal to 
)
