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Mathematics
Problem
Let
A
B
AB
A
B
be a chord of the circle
x
2
+
y
2
=
r
2
x^2 + y^2 = r^2
x
2
+
y
2
=
r
2
subtending a right angle at the centre. Then, the locus of the centroid of the
t
r
i
a
n
g
l
e
P
A
B
triangle PAB
t
r
ian
g
l
e
P
A
B
as
P
P
P
moves on the circle is a. a parabola b. a circle c. an ellipse d. a pair of straight lines
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