Question

Resultant of two vectors ā and b is ✓7b, the angle between them is 60°Then positive value a/b is​

Answer 1

Answer:

c^2 = a^2 + b^2 + 2ab cos 60

7b^2 = a^2 + b^2 + ab

6b^2 = a^2 + ab

Dividing both sides by a^ 2 and letting b/a = n

6n^2 = 1 + n

n = 1/2 & -1/3.

b/a = 1/2 & -1/3.