Hi friends

This is a very hard vector question that even my teacher couldn't anwer!

Attached is the diagram.

The question is as follows:

ABCDEFGH is a regular octagon.

AB = a and AH = b . Express the following vecotrs in terms of a and b:

BG

The answer seems to be more complicated than the question. It is (1+√2)b

This question seems imposible to solve!

But there are many smart people here, so I thought I should give it a try.

Thanks in advance