1's Association

1's Association
= x² + y² [Radius of unity circle]
= sin² X + cos² X
= log 10
= x²/a² + y²/b² [oval]
= lim sin x / x ; x-> 0
= nCn
= (-1/2 ± i√3 /2)³ [cubit root of unity : x³ = 1]