1.

The value of \[\mathbf{sin}\,\mathbf{45}{}^\circ .\,\mathbf{cos}\,\mathbf{30}{}^\circ -\mathbf{cos}\,\mathbf{45}{}^\circ .\,\mathbf{sin}\,\mathbf{30}{}^\circ \] is equal to _________

A.  \[\frac{\sqrt{3}+1}{2}\]           
B.       \[\frac{\sqrt{6}-\sqrt{2}}{4}\]
C.  \[\frac{\sqrt{2}}{4}(\sqrt{3}+\sqrt{2})\]             
D.  \[\frac{\sqrt{6}-\sqrt{2}}{2\sqrt{2}}\]
E.  None of these
Answer» C.  \[\frac{\sqrt{2}}{4}(\sqrt{3}+\sqrt{2})\]             


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