HyperbolaEasy
Question
The line lx + my + n = 0 will be a tangent to the hyperbola 
= 1, if -
= 1, if -Options
A.a2l2 + b2m2 = n2
B.a2l2 − b2m2 = n2
C.am2 − b2n2 = a2l2
D.None of these
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