Question

in a centroid of the triangle formed by points P(a,b), Q(b,c), R(c,a) is at origin. What is the value of a+b+c?​

Answer 1

Step-by-step explanation:

Co-ordinate geometry...... =____=

Let

P(a,b) = (x1, y1)

Q(b,c) = (x2,y2)

R(c,a) = (x3,y3)

Centroid formula =

x = x1+x2+x3/3 and y = y1+y2+y3/3

x = a + b + c/3 and y = a + b + c/3

so two values of a + b+ c comes

a + b +c = 3(x) or 3(y)