Questions
If the centroid of the triangle having its vertices ,(1, a), (2, b) and (c2 ,- 3) lies on X-axis, then
a
a=3
b
b=3
c
a+b=3
d
a+b=-3
detailed solution
Correct option is C
The coordinates of the centroid are3+c23,a+b−33 It lies on x-axis. So, its y- coordinates is zeroa+b−33=0⇒a+b=3Talk to our academic expert!
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