OG = OB + BG
So
OG/OB = 1 + BG/OB
3/1 = 1 + BG/OB
2 = BG/Ob
SO BG = 2OB = 2b.
In the figure OE:EA=1:2, AF:FB=3:1 and OG:OB=3:1. The vector OA=a and the vector OB=b.
Find, in terms of a, b or a and b, expressions for:
(a) OE
(b) OF
(c) EF
(d) BG
(e) FB
(f) FG
I am stuck on part 'd', my book says vector BG = 2b , and I cannot seem to understand how they got this?
I know OG:OB = 1:3, so does that not mean that ?
and so to get vector BG ,
that's my thinking, but the correct answer is BG=2b can someone please show me where I am going wrong.
thank you