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Find the centre and radius of the circle `(x-2)^(2)+(y+5)^(2)=49` |
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Answer» `(x-2)^(2)+(y+5)^(2)=49` `rArr(x-2)^(2)+(y-5)^(2)=7^(2)` Comparing with the equation of circle `(x-h)^(2)+(y-k)^(2)-a^(2)` `h=2,k=-5,a=7` `:.` Centre of circle `-(h,k)=(2,-5)` and radius `a=7`. |
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