Evaluate a. (a + b +c) Watch
Q4) The sides of this equilateral triangle (in attatchment) are 2 units long & represent the vectors a,b, & c.
Evaluate a. (a + b +c)
I guess ya need to find the components of these vectors, but I just dont know how...maybe I'm missing sommin important here that one of you guys might notice.
a.(a + b + c)
= 2 a.b
Now use a formula for the dot product.