1.

The angle between the lines represented by the equation \[\lambda {{x}^{2}}+{{(1-\lambda )}^{2}}xy-\lambda {{y}^{2}}=0\], is

A.   \[{{30}^{o}}\]     
B.   \[{{45}^{o}}\]
C.   \[{{60}^{o}}\]     
D.   \[{{90}^{o}}\]
Answer» E.


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