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Show that the angle of rotation of the axes to eliminate xy term in the equation `ax^(2) + 2hxy + by^(2) = 0 " is " (1)/(2) Tan^(-1) ((2h)/(a - b)) " when " a ne b and pi //4` when a = b

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The correct Answer is:
`2x^() - 5xy + 2y^(2)+ 5x + 7y + 1 = 0 is pi //4`
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