Isaac C. answered • 03/28/17

Tutor

4.9
(747)
Physics, Chemistry, Math, and Computer Programming Tutor

The remaining angle of that isosceles triangle is 180 - 2*30 = 120. We can then calculate the base of the isosceles triangle using the law of sines.

sin 30/1 = sin 120 /x => x = sin 120/sin 30 = sqrt 3;

Since this base is one side of an equilateral triangle, the perimeter of the triangle is then 3 * sqrt 3.