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If the pair of straight lines x^2 - 2pxy...

If the pair of straight lines `x^2 - 2pxy - y^2 = 0` and `x^2 - 2qxy -y^2 = 0` be such that each pair bisects the angle between the other pair, then

A

`p=-q`

B

pq = 1

C

`pq=-1`

D

p = q

Text Solution

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The correct Answer is:
C
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