A) \[3{{a}^{2}}+2ab+3{{b}^{2}}=0\]
B) \[3{{a}^{2}}+10ab+3{{b}^{2}}=0\]
C) \[3{{a}^{2}}-2ab+3{{b}^{2}}=0\]
D) \[3{{a}^{2}}-10ab+3{{b}^{2}}=0\]
Correct Answer: A
Solution :
Equation of pair of lines is Since, ?.(i) Angle between lines is given by [from Eq. (i)]You need to login to perform this action.
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