Category: Analytical Geometry – II (Excercise with solutions))

1.  Find the equation of the circle with centre (1, -2) and radius 5 units. Soln:   We know that  the  equation of circle is (x – h )2 + (y – k )2    =   r2 Here h =  1,  k = – 2  (given)   and   r  =  5 (x – 1 )2  + (y + 2 )2 = 52 x2 – 2x + 1+  y2 +  4y + 4= 25 x2  +   y2   – 2x  + 4y + 5 -25 = 0 x2  +   y2    – 2x  + 4y…

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