abcdef is a regular hexagon with point o a centre. the value of ab+ac+ad+ae+af is
(a)2ao
(b)4ao
(c)6ao
(d)0
ab bc cd de ef fa all r vectors
abcdef is a regular hexagon with point o a centre. the value of ab+ac+ad+ae+af is
(a)2ao
(b)4ao
(c)6ao
(d)0
ab bc cd de ef fa all r vectors