Sine and Cosine Rule

Question 1

What is the sine rule for finding a missing angle? What about a missing side?

Answer 1

Angle: (sinA / a) = (sinB / b) = (sinC / c)
Side: (a / sinA) = (b / sinB) = (c / sinC)

Question 2

What is the formula for the cosine rule?

Answer 2

a^2 = b^2 + c^2 - 2bc cos(A)