question_answer

If \[\mathbf{Sin}\,\theta -\mathbf{Cos}\,\theta \mathbf{=0,}\] then the value of  \[\mathbf{Cose}{{\mathbf{c}}^{2}}\theta -\mathbf{Se}{{\mathbf{c}}^{2}}\theta \] is equal to _________

A)  1                                                        

B)  2            

C)  \[\frac{1}{2}\]                                                             

D) 0

E) None of these