1.

If the curves, x2a+y2b=1 and x2c+y2d=1 intersect each other at an angle of 90∘, then which of the following relations is TRUE ?

Answer»

If the curves, x2a+y2b=1 and x2c+y2d=1 intersect each other at an angle of 90, then which of the following relations is TRUE ?



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