Step-by-step explanation:
Example 1 Find an equation of the circle with centre at (0,0) and radius r We know that equation of a circle is (x – h)2 + (y – k)2 = r2 Where (h, k) is the centre & r is the radius Here Centre (h, k) = (0, 0) So h = 0 & k = 0 & radius is r . Putting values in (1) (x − 0)2 + (y – 0
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