If {\text{A = }}\,\,\left[ {\begin{array}{*{20}{c}} {{\text{cos\,\theta}}}{{\text{ - sin\,\theta}}} \\ {{\text{sin\,\theta}}}{{\text{cos\,\theta}}} \end{array}} \right], then the matrix A–50 when is equal to :
- A
\left[ {\begin{array}{*{20}{c}} {\dfrac{{\sqrt 3 }}{2}}{\dfrac{1}{2}} \\ { - \dfrac{1}{2}}{\dfrac{{\sqrt 3 }}{2}} \end{array}} \right]\, - B
\left[ {\begin{array}{*{20}{c}} {\dfrac{1}{2}}{\dfrac{{\sqrt 3 }}{2}} \\ { - \dfrac{{\sqrt 3 }}{2}}{\dfrac{1}{2}} \end{array}} \right] - C
\left[ {\begin{array}{*{20}{c}} {\dfrac{1}{2}}{ - \dfrac{{\sqrt 3 }}{2}} \\ {\dfrac{{\sqrt 3 }}{2}}{\dfrac{1}{2}} \end{array}} \right]\, - D
\left[ {\begin{array}{*{20}{c}} {\dfrac{{\sqrt 3 }}{2}}{ - \dfrac{1}{2}} \\ {\dfrac{1}{2}}{\dfrac{{\sqrt 3 }}{2}} \end{array}} \right]\,
