Prove that in a triangle, other than an equilateral triangle, angle opposite to the longest side is greater than 2/3 of a right angle.

Prove that in a triangle, other than an equilateral triangle, angle op

1.	Prove that in a triangle, other than an equilateral triangle, angle opposite to the longest side is greater than 2/3 of a right angle.
Answer» Prove that in a triangle, other than an equilateral triangle, angle opposite to the longest side is greater than 2/3 of a right angle.