Calculated Industries 4065 v3.1 User Guide - Manual (Page 89)

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Angle — Rise and Hypotenuse Known
Find the angle that connects the rise and hypotenuse of a right triangle,
if the rise is 6 Feet and the hypotenuse is 10 Feet in length.
KEYSTROKE DISPLAY
1. Use trigonometric formula (divide the rise by the hypotenuse):
o o 0.
6 f ÷ 1 0 f = 0.6
2. Solve for degrees:minutes:seconds or angle:
З з (cos -1 ) 53.13°
Ç • (dms deg) DMS 53.07.48