TM 1-1520-238-MTF
4-24
a. Calculate actual track angles:
Formula:
Angle 1
E n
N n
Tan
1
NOTE
The calculation determines the actual
course that should have been flown. (n) rep-
resents the number of the leg flown.
Example Calculation:
Easting
Northing
WPT (H)
3246
0360
WPT (1)
–2222
–2830
E =
1024
–2470
= N
Angle 1
1024
2470
Tan
1
23.518
b. Calculate Flown Track Angles:
Formula:
Angle 2
En
Nn
Tan
1
NOTE
This calculation determines the course that
was flown:
Example Calculation:
Easting
Northing
(Actual WPT (H) Data
3246
0360
(Indicated WPT (1) Data
–2189
–2832
En =
1057
–2472
= Nn
