1.

Each of the two orthogonal circles C_(1) and C_(2) passes through both the points (2, 0) and (-2, 0). If y=mx+c is a common tangent to these circles, then

Answer»

`C^(2)=4(1+2m^(2))`
`c^(2)=2(1+2m^(2))`
`c^(2)=1+m^(2)`
`c^(2)m^(2)=4(1+m^(2))`

ANSWER :A


Discussion

No Comment Found

Related InterviewSolutions