EAMCET Engineering 2003 Solved Paper

Given that, 5x−12y+10=0 . . . (i)
and ‌‌−5x+12y+16=0 . . . (ii)
Slope of Eq. (i) =‌

5

12

Slope of Eq. (ii) =‌

5

12

Thus, Eqs. (i) and (ii) are parallel.
Therefore, distance between parallel lines = diameters of the circle.
⇒‌

|10+16|

√25+144

=2×‌ Radius of the circle ‌
⇒2×‌ Radius of circle ‌=‌

26

13

∴‌‌ Radius of circle ‌=1