Okay, the last one for today hopefully phew...!

I can guaranteed this one is DIFFICULT!!!

Three vectors x, y, and z satisfy x + y + z = 0. Calculate the value of , is |x| = 2, |y| = 3, and |z| = 4.

Lol learning how to use LateX here to see if it helps:D Will be learning more hopefully haha:D

Thanks