Question

If a,b,c are three vectors such that |a| = 5,|b| = 12 and |c| =13, and a +b + c = 0, find the value of
a.b + b.c + c.a​

Answer 1

Answer:

zero

Step-by-step explanation:

dot product is done for same caps I .I or j.j or k.k

for rest all dot product is zero

there fore 0+0+0 = zero

Answer 2

$\huge{\boxed{ \boxed{\mathbb{ \red{ANSWER}}}}}$

We know dot product of vectors of same unit is 0

Therefore, a.b + b.c + c.a = 0