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If curves (x^2)/(a^2)-(y^2)/(b^2)=1 and ...

If curves `(x^2)/(a^2)-(y^2)/(b^2)=1` and xy=`c^2` intersect othrogonally , then

A

a+b=0

B

`a^2=b^2`

C

a+b=c

D

None of these

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The correct Answer is:
B
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