The nature of lines 7x+5y+6=0and 5x-7y+6=0
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perpendicular because product of their gradient is -1.
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Slope of first line is (-5/7)
And,Slope of second line is (7/5)
The product of slopes of these two lines= - 1
Hence, these two lines are perpendicular to each other
And,Slope of second line is (7/5)
The product of slopes of these two lines= - 1
Hence, these two lines are perpendicular to each other
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