Vector Geometry Question help please!
I have the d) part as my doubt the question is on this weblink-
Please provide adequate information to comprehend(it isn't homework help but my exams are coming so I need it)
Thank you very much for your kind support!:)
In fig dirction of AB is not assigned. Also dirction of OX and CB is missing. We try to answer keeping your answer in view and assign direction acordingly.
Let direction of AB is A to B .
(a). By triangle law ,OB is resultant of vectors OA and AB
=-(1/4)a+(1/4)b (scalar multimultiplication).
(c). Dircetion of BC is B to C
So again by triangle law for resulatant of vectors,
(d). OX parallel to BC
OX= n. OB
(3/4)a+(1/4)b =n( a+(m-1)b)
Compare the coefficients of a and b