If A = \(\left( {\begin{array}{*{20}{c}} 0&{\sin α }\\ {\sin α }&0 \end{array}} \right)\)and det \(\left( {{A^2} - \frac{1}{2}I} \right) = 0\), then a possible value of α is
1
\(\frac{\pi }{2}\)
2
\(\frac{\pi }{3}\)
3
\(\frac{\pi }{4}\)
4
\(\frac{\pi }{6}\)