1.

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
Answer» E.  None of these


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