Question

If the line 3x-4y+4=0 and 6x-8y-7=0 are tangents to a circle,then the radius of the circle is.

Answer 1

Answer:

radius is 3/4

Step-by-step explanation:

3x-4y+4=0----------> eq 1

6x-8y-7=0-----------> eq2

divide eq 2 by 2

therefore, 3x-4y-(7/2)=0

thus,

        4/(√9+16) + (7/2)/(√9+16)=3/2

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