• question_answer The equation of the bisectors of the angles between the lines represented by ${{x}^{2}}+2xy\cot \theta +{{y}^{2}}=0$, is A)            ${{x}^{2}}-{{y}^{2}}=0$  B)            ${{x}^{2}}-{{y}^{2}}=xy$ C)            $({{x}^{2}}-{{y}^{2}})\cot \theta =2xy$                       D)            None of these

Equation of bisectors is given by $\frac{{{x}^{2}}-{{y}^{2}}}{a-b}=\frac{xy}{h}$                    or $\frac{{{x}^{2}}-{{y}^{2}}}{0}=\frac{xy}{\cot \theta }$or ${{x}^{2}}-{{y}^{2}}=0$ .