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प्रश्न
The combined equation of the two lines passing through the origin, each making angle 45° and 135° with the positive X-axis is ______
पर्याय
x2 + y2 = 0
xy = 1
x2 − y2 = 0
x2 + xy =0
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उत्तर
x2 − y2 = 0
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