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CBSE Notes 2011-2012

If the segment joining the points (a, b) and (c, d) subtends a right angle at the origin, then

Multiple choice question

If the segment joining the points (a, b) and (c, d) subtends
a right angle at the origin, then

unknown

ac - bd = 0

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ac + bd = 0

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ab + cd= 0

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ab - cd = 0