NCERT Class XI Mathematics - Conic Sections - Solutions
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Question : 1
Total: 71
centre (0, 2) and radius 2
Solution:
Here h = 0, k = 2 and r = 2
The equation of circle is,( x – h ) 2 + ( y – k ) 2 = r 2
∴( x – 0 ) 2 + ( y – 2 ) 2 = ( 2 ) 2 ⇒ x 2 + y 2 + 4 – 4y = 4
⇒x 2 + y 2 – 4y = 0
The equation of circle is,
∴
⇒
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