If A(Cos`alpha` , Sin`alpha`), B( Sin`alpha`,-Cos`alpha`), C(1,2) are the verties of a `Delta`ABC, then as `alpha` varies, the locus of its centroid is:

If A(cos alpha,sin alpha),B(sin alpha,cos alpha),C(1,2) are the vertices of Delta ABC, then as alpha veries,the locusof its centroid is

If A(cos alpha, sin alpha), B(sin alpha, -cos alpha), C(1,2) are the vertices of a triangle, then as alpha varies the locus of centroid of the DeltaABC is a circle whose radius is :

If A(cos alpha, sin alpha), B(sin alpha, -cos alpha), C(1,2) are the vertices of a triangle, then as alpha varies the locus of centroid of the DeltaABC is a circle whose radius is :

If (cos alpha,sin alpha),B(sin alpha,-cos alpha),C(1,2)A(cos alpha,sin alpha),B(sin alpha,-cos alpha),C(1,2) are the vertices of $ABC, then as alpha varies, find the locus of its centroid.

If A ( cos alpha, sin alpha ), B (sin alpha - cos alpha ), C( 1, 2 ) are the vertices of a Delta ABC , then the locus of its centroid is

If A(cos alpha,sin alpha),B(sin alpha,-cos alpha) and C(2,1) are the vertices of a triangle ABC . The locus of the centroid if alpha varies is

If A =[(cos alpha, sin alpha),(-sin alpha, cos alpha)] , then find A^(T) A.