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August 21, 2014

August 21, 2014

Posted by **rishabh** on Saturday, September 4, 2010 at 10:19am.

- geometry -
**drwls**, Saturday, September 4, 2010 at 10:57amSince the sides are in a 3:4:5 ratio, it is a right triangle. The right angle is between the sides with lengths 9 and 12.

The smallest angle is

A = sin^-1(3/5) = 36.87 degrees.

The perpendicular to the hypotenuse is

12 sin A = 12*sin36.87 = 12*0.6 = 7.2 cm

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