the pitch angle of the blade is the difference in angle between the chord line and the reference datum. the reference datum is an imaginary line perpendicular to the rotor mast. angle of attack is the difference in angle between the chord lie and the relative wind

relative wind is the combination of all airflow over an airfoil. in the case of a helicopter reletive wind comes from the rotation of the rotor head, movement of the helicopter in any direction, atmospheric wind, induced flow from the creation of lift and from flapping or leading and lagging

lol your tellin me

(c) For a helicopter rating. Except as provided in paragraph (k) of this section, a person who applies for a private pilot certificate with rotorcraft category and helicopter class rating must log at least 40 hours of flight time that includes at least 20 hours of flight training from an authorized instructor and 10 hours of solo flight training in the areas of operation listed in Sec. 61.107(b)(3) of this part, and the training must include at least--

(1) 3 hours of cross-country flight training in a helicopter;

(2) Except as provided in Sec. 61.110 of this part, 3 hours of night flight training in a helicopter that includes--

(i) One cross-country flight of over 50 nautical miles total distance; and

(ii) 10 takeoffs and 10 landings to a full stop (with each landing involving a flight in the traffic pattern) at an airport.

(3) 3 hours of flight training with an authorized instructor in a helicopter in preparation for the practical test, which must have been performed within the preceding 2 calendar months from the month of the test; and

(4) 10 hours of solo flight time in a helicopter, consisting of at least--

(i) 3 hours cross-country time;

(ii) One solo cross country flight of 100 nautical miles total distance, with landings at three points, and one segment of the flight being a straight-line distance of more than 25 nautical miles between the takeoff and landing locations; and

(iii) Three takeoffs and three landings to a full stop (with each landing involving a flight in the traffic pattern) at an airport with an operating control tower.

Now that does raise some questions. Again if you do have to land I should not have received my PPL. If you have an AOPA membership I would give them a call. In my IMHO a hover is a full stop but the people at AOPA are good about answering these kind of questions

(a) General experience. (1) Except as provided in paragraph (e) of this section, no person may act as a pilot in command of an aircraft carrying passengers or of an aircraft certificated for more than one pilot flight crewmember unless that person has made at least three takeoffs and three landings within the preceding 90 days, and—

(i) The person acted as the sole manipulator of the flight controls; and

(ii) The required takeoffs and landings were performed in an aircraft of the same category, class, and type (if a type rating is required), and, if the aircraft to be flown is an airplane with a tailwheel, the takeoffs and landings must have been made to a full stop in an airplane with a tailwheel.

as you can see the subpart that requires a full stop only applies to a tailwheel equipped airplane

If a hover isn't a full stop then I haven't been current for a long time