If the angle between two forces increases, the magnitude of their resultant 

In the figure which of the ways indicated for combining the $x$ and $y$ components of the vector $\overrightarrow{a}$ are proper to determine that vector?

Let $\overrightarrow{\mathrm{a}}$ and $\overrightarrow{\mathrm{b}}$ be two non-null vectors such that $|\overrightarrow{\mathrm{a}}+\overrightarrow{\mathrm{b}}|=|\overrightarrow{\mathrm{a}}-2\overrightarrow{\mathrm{b}}|$. Then the value of $\frac{\left|\overrightarrow{\mathrm{a}}\right|}{\left|\overrightarrow{\mathrm{b}}\right|}$ maybe,