Launch Angle is the angle the ball takes off at relative to the ground.
Launch angle is highly correlated to dynamic loft.
Launch angle will always be a little less than dynamic loft, but will have a similar value.
Along with ball speed, launch angle is a primary component to determining the height and distance of a shot.
Every golfer should be fitted to achieve the optimal balance of launch angle and spin rate based on their club speed and ball speed
TECHNICAL DEFINITION:
Launch Angle – The vertical angle relative to the horizon of the golf ball’s
centre of gravity movement immediately after leaving the club face