If `a xx b = c xx d, a xx c = b xx d` then

If a xx b=c xx d and a xx c=b xx d, then vectors a-d and b-c will be

If a xx b = c xx d and a xx c = b xxd , show that (a-d) is parallel to (b-c), it being given that a ne b and b ne c.

If a + 2b - c = 0 and a xx b + b xx c + c xx a = lambda (a xx b) , then the value of lambda is equal to a)5 b)4 c)2 d)-2

(a + b) xx c + (b + c) xx a + (c + a) xx b =