Question

In ∆ABC the length of sides BC,CA and AB are a,b and c respectively. Median AD drawn from A is perpendicular to BC then b is?
1)√(a^2+c^2)
2)√(c^2-a^2)
3)√(a^2-3c^2)
4)√(a^2-c^2)

Answer 1

side b=side c. cz median is perpendicular only in isosceles and equilateral triangle