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January 28, 2015

January 28, 2015

Posted by **Leasha** on Monday, June 20, 2011 at 7:11pm.

- math -
**Damon**, Monday, June 20, 2011 at 8:04pm3 isosceles triangles around circle center with equal legs of 21 in and included angle of 360/3 = 120 degrees

other 2 angles are (180-120)/2 = 30 deg

law of sines

sin 120/base = sin 30/21

.866/base = .5/21

so base, which is a side of our triangle = .866 *21 * 2 = 36.4 in

- math -
**Leasha**, Tuesday, June 21, 2011 at 5:21pmThanks so much!

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