If a, b, c are vectors such that a + b + c = 0 and | a| = 7, | b| = 5, | c| = 3 then angle between vector b...

Question

If a, b, c are vectors such that a + b + c = 0 and | a| = 7, | b| = 5, | c| = 3 then angle between vector b and c is

Accepted Answer

(1)

JEE Main 2002 Mathematics question