HP -11C Owner's Handbook Manual page 89

74 Section 10: Applications Programs
INPUT
DATA/UNITS
Angle 2
OUTPUT
KEYSTROKES 1 oaTa/UNITS
ig Tree
To find the remaining sides and
no alternative triangle is possible:
H second triangle is possible
Example 1: A surveyor is to find the area and dimensions of a
triangular land parcel. From point A, the distances to B and C are
measured with an electronic distance meter. The angle between AB
and AC is also measured. Find the area and other dimensions of
the triangle.
297.35
meters
Ne eee LS
Section 10: Applications Programs 95
This is a side-angle-side problem where:
S$, = 171.63, A,=98°12" and S,=297.35.
Keystrokes Display
(S)(GES)
(A(FIX}2
Set User mode.
171.63 (ENTER) 171.63
98.12 (a ][eH] 98.20
297.35 [D} 25,266.21 Area.
R/S 171.63 Sy
(R7S] 98.20 Ay
R/S 297.35 Sp
[R/S] 27.83 Ag
R/S: 363.91 S3
(R7S] 53.97 As
Example 2: Given 2 sides and a nonincluded angle, solve for the
triangle:
Angle, = 42, 3°
Ai
A3 f aero ys
S3