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If the tangents at t1 and t2 to a parabola are perpendicular then the value of |(t1+t2)2−(t1−t2)2| is |
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Answer» If the tangents at t1 and t2 to a parabola are perpendicular then the value of |(t1+t2)2−(t1−t2)2| is |
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