Question

write the herons formula used to calculate the area of triangle whose side are a, b,and,c

Answer 1

Hey, hi

Here is ur answer

____________________________

Given sides = a, b, c

S = a + b + c
______
2

Area of triangle = √s(s-a)(s-b)(s-c)

______---------__________________

sahil kumar

Answer 2

Hey !!!

∆ = 1 /2absinC

= 1 /2ab ×2sinC/2×cosC/2

{•°• sin2A = 2sinA ×cosA using this formula }

= ab√(s-a)(s-b)/ab ×√s(s-c)/ab

•°• sinC/2 = √(s-a)(s-b)/ab and cosC/2 = √s(s-c)/ab

= √s(s-a)(s-b)(s-c) [Prooved here ]

****************************
Hope it helps you !!!

@Rajukumar111