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A day full of math games & activities. Find one near you.
Find the equation of the circle with centre (- 2, 3) and radius 4
Solution:
The equation of a circle with centre(h, k) and radius r is given as
(x - h)2 + (y - k)2 = r2
It is given that centre (h, k) = (- 2, 3)
and radius (r ) = 4.
Therefore,
the equation of the circle is
(x + 2)2 + (y - 3)2 = 42
x2 + 4x + 4 + y2 - 6y + 9 = 16
x2 + y2 + 4x - 6y - 3 = 0
NCERT Solutions Class 11 Maths Chapter 11 Exercise 11.1 Question 2
Find the equation of the circle with centre (- 2, 3) and radius 4
Summary:
The equation of the circle is x2 + y2 + 4x - 6y - 3 = 0
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