Question

If A,Band Care non zero vectors and A.B= 0 and B.B= 0, find the value of A.C​

Answer 1

Explanation:

given A.B=0 and B.C=0

so a.b.cos(theta)=0

cos theta=0

theta is 90

similarly for b.c=0 therefore ab are mutually perpendicular and so are bc

therefore angle between ac is also 90

( a in x dir

b in y dir

c in z dir)

ac cosalpha = a.c.0 = 0