Have you practised your Vectors?

Geometry Level 2

If A\vec A and B\vec B are two vectors such that A+B\vec A + \vec B is perpendicular to B\vec B and A+2B\vec A+2\vec B is perpendicular to A\vec A, which of the following is correct?


Clarification: The vectors A\vec A and B\vec B are both non-zero.

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