Consider the function \(\rm f\left( x \right) = \;\left\{ {\begin{array}{*{20}{c}} {\frac{{\alpha \cos x}}{{\pi - 2x}}\;\;if\;x \ne \frac{\pi }{2}}\\ {3\;\;\;\;\;\;\;\;\;if\;x = \frac{\pi }{2}} \end{array}} \right.\) which is continuous at x = π / 2, where α is a constant. Find the value of α.
1
6
2
3
3
2
4
1