Question 52923: 1) write the equation of the circle with center at(2,1)and which passes thru the point (2,7)
2) write the equation of the circle with center at (-1,-2) and which passes thru the point(-1,2)
Answer by venugopalramana(3286)   (Show Source):
You can put this solution on YOUR website! 1) write the equation of the circle with center at(2,1)and which passes thru the point (2,7)
STD.EQN.OF CIRCLE WITH CENTRE AS (H,K) AND RADIUS = R IS
(X-H)^2 + (Y-K)^2 =R^2.............H=2.........K=1..........SO
EQN.IS
(X-2)^2+(Y-1)^2=R^2..IT PASSES THROUGH (2,7)..HENCE
(2-2)^2+(7-1)^2=R^2=36
HENCE EQN.OF CIRLE IS
(X-2)^2+(Y-1)^2=36
2) write the equation of the circle with center at (-1,-2) and which passes thru the point(-1,2)
DO BY SAME METHOD AS ABOVE
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