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Grade: 12

                        

If triangle AOB is an equilaterlal triangle (O is the and A is a point on the x axis ) then the centriod of the triangle will be

9 years ago

Answers : (1)

mayur hampiholi
16 Points
							

ASSUMING O IS THE ORIGIN:

A IS DISTANCE a UNITS FROM THE ORIGIN.coordinate of A is (a,0)

coordinate of b is (a/2,31/2a/2)...easily attainable....u knw that ob makes an angle of pi/3 with x axis and that the distance of ob is a units......

NOW, THE X COORDINATE OF CENTROID IS a/2. from symetry.

or now u knw the points u can find centroid usin- g=((x1+x2+x3)/3,(y1+y2+y3)/3)


9 years ago
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