Question

The triangle below is equilateral. Find the length of side x in simplest radical

form with a rational denominator.
x
Radical 10

Answer 1

x = √30/2

Explanation:

x² + [(√10)/2]² = (√10)²

x² + 10/4 = 10

x² = 20/2 - 5/2

x² = 15/2

x = √(15/2)

x = √(15/2) × √(2/2)

x = √30/2