Calculated Industries 4090 - Manual (Page 74)

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4) Input Triangle I and find Angles A and C:
KEYSTROKE DISPLAY
1. Enter side a, b, and c:
o o 0.
2 f 2 i Ç 4 A 2
FEET
2
INCH
1 0 f 2 i 1 / 4 Ç 5 B 10
FEET
2-1/4
INCH
9 f 8 i 1 / 8 Ç 6 C 9
FEET
8-1/8
INCH
2. Use Law of Cosines to find Angle “A” and store in Memory 1:
Ç 9 /_ A 12.17384°
= Ç 1 M-1 12.17384°
3. Use Law of Cosines to find Angle “C” and store in Memory 2:
Ç 9 9 9 /_ C 70.36573°
= Ç 2 M-2 70.36573°
STORED
STORED
STORED