strange rotation issue

[Stinkee2]

Edit:
New Rotation code

void Vector::RotateAround(Vector *V,int Angle)
    {
        this->X = V->X + (this->DistanceFrom(V) * cosf(DegToRad(Angle)));
        this->Y = V->Y + (this->DistanceFrom(V) * sinf(DegToRad(Angle)));
    }

DegToRad Converts Degrees to Radians...
but still Whenever I try rotating a point using this method, It spirals inward until it gets to the origin (V).

What Am I Doing Wrong Here???