Solution:
How do you prove that in a triangle a^2 +b^2 +c^2 =4√3 Δ
Do you remember Cosine Rule??
TRIANGLES
DEFINITION Triangle is a closed figure bounded by three straight lines called sides. It can also be defined as polygon of three sides. Area of triangle The area of the triangle is given by the following formulas: Given the base and the altitude See also the links below: CENTRES OF THE TRIANGLEDERIVATION OF HERON'S FORMULA
M CUBE: MatheMatics by Maheshwari 