Teaching AWES Army Public School TGT Mock Test 2024 Engineering Mathematics Linear Algebra Matrix Algebra
यदि A = \(\left( {\begin{array}{*{20}{c}} {\cos α}&{ - \sin α}\\ {\sin α}&{\cos α} \end{array}} \right)\) है तथा A + A ' = I है, तो α का मान क्या है?
1
\(\frac{\pi }{6}\)
2
\(\frac{\pi }{3}\)
3
\(\pi \)
4
\(\frac{3\pi }{2}\)