The matrix \(A = \left[ {\begin{array}{*{20}{c}} {\cos \theta }&{\sin \theta }\\ { \sin \theta }&{\cos \theta } \end{array}} \right]\)is

The matrix \(A = \left[ {\begin{array}{*{20}{c}} {\cos \theta }

1.	The matrix \(A = \left[ {\begin{array}{*{20}{c}} {\cos \theta }&{\sin \theta }\\ { \sin \theta }&{\cos \theta } \end{array}} \right]\)is
A.	Orthogonal matrix
B.	Reciprocal matrix
C.	Transposed matrix
D.	none of these
Answer» D. none of these