1.

Equation of the locus of the centroid of the triangle whose vertices are (acos k, a sin k),(b sin k, -b cos k) and (1,0) where k is a p arameter is

Answer»

`(1-3x)^(2)+9y^(2)=a^(2)+B^(2)`
`(3x-1)^(2)+9y^(2)=2a^(2)+2B^(2)`
`(3x+1)^(2)+(3y)^(2)=a^(2)+b^(2)`
`(3x+1)^(2)+(3y)^(2)=3a^(2)+3b^(2)`

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