Question

hedians of a triangle ABC right angled at A.
b) BL and CM are medians of a ti
V prove that 4(BL? + CM2) = 5BC2​

Answer 1

1. get the drawing required
2. consider (ABL) BL2=AB2+AC2/4. _1
3. consider (AMC) CM2=AC2+AB2/4. _2
4. add. (1) +(2)
5. get that into the required form