defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Determinants Evaluation of Determinants
Find the value of k if \(\left| {\begin{array}{*{20}{c}} {\sin 30^\circ }&{\cos 30^\circ }\\ { - \sin 60^\circ }&{\cos 60^\circ } \end{array}} \right| = k\)
1
-1
2
0
3
1/2
4
1