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Condition for which the line y = mx + c will touch the circle x^2+y^2=a^2 is  

Option: 1

a=\frac{|c|}{\sqrt{1-m^2}}


Option: 2

a=\frac{|c|}{\sqrt{1+m^2}}


Option: 3

a<\frac{|c|}{\sqrt{1+m^2}}


Option: 4

a>\frac{|c|}{\sqrt{1+m^2}}


Answers (1)

best_answer

Condition for which the line y = mx + c will touch the circle x^2+y^2=a^2 is  a=\frac{|c|}{\sqrt{1+m^2}}.

Posted by

Ritika Harsh

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