question_answer

If the bisectors of the angles of the lines represented by \[3{{x}^{2}}-4xy+5{{y}^{2}}=0\] and \[5{{x}^{2}}+4xy+3{{y}^{2}}=0\] are same, then the angle made by the lines represented by first with the second, is

A)            \[{{30}^{o}}\]                       

B)            \[{{60}^{o}}\]

C)            \[{{45}^{o}}\]                       

D)            \[{{90}^{o}}\]