뭔가 쉬운게 있을지도 모르지만 머리가 나쁜관계로 기록! (산수가 가장 어려워요) #define CC_RADIANS_TO_DEGREES(__ANGLE__) ((__ANGLE__) * 57.29577951f) // PI * 180 -(float)degreeBetweenFirstPoint:(CGPoint)_firstPoint andLastPoint:(CGPoint)_lastPoint{ float defX = _lastPoint.x - _firstPoint.x; float defY = _lastPoint.y - _firstPoint.y; // Determine angle float angleRadians = atanf(defX / defY); float angleDegrees = CC_RADIANS_TO_DEG..