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Given:

theta = pitch angle.
gamma = flight path angle
alpha = angle of attack
no wind, bank or sideslip

The relationship between these three parameters is:

  • A
    theta = gamma + alpha.
  • B
    alpha = gamma – theta.
  • C
    theta = gamma – alpha.
  • D
    gamma = alpha – theta.

Refer to figure.
Pitch Angle: The angle between the aircraft longitudinal axis and the horizon.
Flight Path Angle: The angle between the flight path and the horizon.
Angle of Attack: The angle between the chord line and the Relative Airflow.

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