Calculated Industries 4090 - Manual (Page 106)

U
SER
’
S
G
UIDE
— 105
Law of Cosines
Law of Sines
Heron’s Theorem
Tan =
A
2
r
s – a
( )
Tan =
B
2
r
s – b
( )
Tan =
C
2
r
s – c
( )
s = (a + b + c)
1
2
A
C a B
c
b a
=
b
=
c
= 2R
sin A sin B sin C
R
A
B a C
b
c
a 2 = b 2 + c 2 – 2bccosA
b 2 = c 2 + a 2 – 2cacosB
c 2 = a 2 + b 2 – 2abcosC
APPENDIX D — LAW OF COSINES / HERON’S
THEOREM FORMULAS