1.

Statement I. The four straight lines given by 6x^2+5xy-6y^2=0 and 6x^2+5xy-6y^2-x+5y-1=0 are the sides of a square . Statement II . The lines represented by general equation of second degree ax^2+2hxy+by^2+2gx+2fy+c=0are perpendicular if a+b=0 .

Answer»

STATEMENT I is TRUE, Statement II is true , Statement II is a correct explanationfor Statement I
Statement I is true , Statement II is true , Statement II is not a correct explanation for statement I
Statement I is true , Statement II is false
Statement I is false , Statement II is true

Answer :B


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