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In the figure, triangles ABC and BCD are equilateral triangles. What is the value of AD/BC when expressed in simplest radical form?

 May 19, 2019
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The height of an eqilateral triangle  with side, S   = S*sqrt (3) / 2

 

So  AD  is twice this  =   S*sqrt(3)

 

So

 

AD / BC  =     S*sqrt(3)  / S    =   sqrt(3)

 

cool cool cool

 May 19, 2019

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