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The vertices of a DeltaABC has coordinat...

The vertices of a `DeltaABC` has coordinates `(costheta,sintheta),(sintheta,-costheta)` and (1,2). As `theta` varies the locus of centroid of the triangle is the circle

A

`x^(2)+y^(2)-2x-4y+1=0`

B

`3(x^(2)+y^(2))-2x-4y+1=0`

C

`x^(2)+y^(2)-2x-4y+3=0`

D

None of these

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The correct Answer is:
B
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ARIHANT PUBLICATION BIHAR-RECTANGULAR COORDINATES, STRAIGHT LINES, FAMILY OF LINES-EXAM BOORSTER FOR CRACKING EXAM
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