Trigonometry

Law of Cosines

Keywords: Law of Cosines

Law of Cosines

a 2 = b 2 + c 2 2 a b c o s 2 α

b 2 = a 2 + c 2 2 a c c o s 2 β

c 2 = a 2 + b 2 2 a b c o s 2 γ