Posted by anonymous on Tuesday, December 13, 2011 at 1:13pm.
an equilateral triangle has an altitude length of 36 feet. determine the length of a side of the triangle

math  Reiny, Tuesday, December 13, 2011 at 1:36pm
The altitude will be the opposite side to 60° angle of a 306090 rightangled triangle, where the hypotenuse is the length of the equilateral triangle
let that side be x
sin 60° = 36/x
x = 36/sin60 = 36/(√3/2) = 72/√3 = appr. 41.6 feet