question_answer

If \[\frac{\mathbf{sin}\theta \mathbf{+cos}\theta }{\mathbf{sin}\theta -\mathbf{cos}\theta }\mathbf{=3}\] then the value of \[\mathbf{si}{{\mathbf{n}}^{\mathbf{4}}}\theta -\mathbf{co}{{\mathbf{s}}^{\mathbf{4}}}\theta \]

A)  \[\frac{4}{3}\]                                                 

B)  \[\frac{3}{4}\]

C)  \[\frac{5}{3}\]                                                             

D)  \[\frac{3}{5}\]

E)  None of these