The Math sin() static method returns the sine of a number in radians.

    
    function getCircleY(radians, radius) {
      return Math.sin(radians) * radius;
    }

    console.log(getCircleY(1, 10));
    // 8.414709848078965

    console.log(getCircleY(2, 10));
    // 9.092974268256818