1.

The line \[y=mx+c\] intersects the circle \[{{x}^{2}}+{{y}^{2}}={{r}^{2}}\] at the two real distinct points if

A. \[-r\sqrt{1+{{m}^{2}}}<c<r\sqrt{1+{{m}^{2}}}\]
B. \[-r<c<r\]
C. \[-r\sqrt{1-{{m}^{2}}}<c<r\sqrt{1+{{m}^{2}}}\]
D. None of these
Answer» B. \[-r<c<r\]


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