Question

If a, and ā, are non-collinear unit vectors and if
[a, +az]= 13, then the value of
(2a,-52).(3a,+ a) is :
41
11
(a)
2
41
(d)
2
2
1 30
(b). 2
-41​

Answer 1

Answer:

b

Explanation:

because it gets the begetive sign which is mention in the question also