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April 19, 2015

April 19, 2015

Posted by **Juleana** on Saturday, March 19, 2011 at 4:20pm.

- math/ geometry. -
**Anonymous**, Saturday, March 19, 2011 at 4:39pmtan(120°/2)=(18/2)/h

tan(60°)=9/h

h=9/tan(60°)=9*ctg(60°)

h=9/sqroot(3)

9=3*sqroot(3)*sqroot(3)

h=3*sqroot(3)*sqroot(3)/sqroot(3)

h=3*sqroot(3)

h=5.1961524227

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