Let a , b and c be three unit vectors such that a + b + c = 0 . If = a b + b c + c a and d = a b + b c + c a...

Question

Let a , b and c be three unit vectors such that a + b + c = 0 . If = a b + b c + c a and d = a b + b c + c a , then the ordered pair, ( , d ) is equal to:

Accepted Answer

(B)

JEE Main 2020 Mathematics question

Solution