( P^ 2 = left | begin matrix 1 & cos theta cos theta & 1 end matrix right | ) হলে, P=?

P^{2} = \left | \begin{matrix} 1 & \cos{\theta} \\ \cos{\theta} & 1 \end{matrix} \right |

CU-A 19-20 Set-1

P^{2} = \left | \begin{matrix} 1 & \cos{\theta} \\ \cos{\theta} & 1 \end{matrix} \right |

CU-A 19-20 Set-1