Given two vectors \(\overrightarrow{\mathbf{A}}\) and \(\overrightarrow{\mathbf{B}}\) with magnitudes \(A\) and \(B\) respectively, you can subtract \(\overrightarrow{\mathbf{B}}\) from \(\overrightarrow{\mathbf{A}}\) to get a third vector \(\overrightarrow{\mathbf{C}}=\overrightarrow{\mathbf{A}}-\overrightarrow{\mathbf{B}}\). If the magnitude of \(\overrightarrow{\mathbf{C}}\) is equal to \(C=A+B\), what is the relative orientation of vectors \(\overrightarrow{\mathbf{A}}\) and \(\overrightarrow{\mathbf{B}}\) ?