Question

Use the Law of Cosines to find the missing angle.
Find m 11 years ago

Answer 1

a^2 = b^2 + c^ - 2bc Cos A
b^2 = a^2 + c^2 - 2ac Cos B
c^2 = a^2 + b^2 - 2ab Cos C
A + B + C = 180
a/Sin A = b/Sin B = c/Sin C