Trigonometric EquationHard

Question

If the pair of lines ax2 + 2hxy + by2 + 2gx + 2fy + c = 0 intersect on the y - axis then

Options

A.2fgh = bg2 + ch2
B.bg2 ≠ ch2
C.abc = 2fgh
D.none of these

Solution

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