question_answer

                                                   \[\frac{\mathbf{Si}{{\mathbf{n}}^{\mathbf{3}}}\theta \mathbf{+co}{{\mathbf{s}}^{\mathbf{3}}}\theta }{\mathbf{Sin}\theta \mathbf{(1-sin}\theta \mathbf{ cos}\theta \mathbf{)}}+\frac{\mathbf{si}{{\mathbf{n}}^{\mathbf{3}}}\theta \mathbf{-co}{{\mathbf{s}}^{\mathbf{3}}}\theta }{\mathbf{sin}\theta \mathbf{(1+sin}\theta \mathbf{cos}\theta \mathbf{)}}\]equals to ________

A)  2 sin\[\theta \]                                                               

B)  2\[cos\,\theta \]       

C)  1                                                                    

D)  2

E)  None of these