Question
Question: A point moves in such a way that its distance from origin is always 4. Then the locus of the point i...
A point moves in such a way that its distance from origin is always 4. Then the locus of the point is-
A
x2 + y2 = 4
B
x2 + y2 = 16
C
x2 + y2 = 2
D
None of these
Answer
x2 + y2 = 16
Explanation
Solution
Let the point (h, k)
given h2+k2 = 4
Ž h2 + k2 = 16
\ x2 + y2 = 16