Question

The vectir AB = 3i+4j and AC = 5i-2j+4k are the sides of a triangle ABC. the length of the median through A is

Answer 1

an attempt to the question :

Answer 2

Step-by-step explanation:

Length of the median through A is

AB+AC/2

8i-2j+8k/2=4i-j+4k= root (16+1+16)

=√33 answer