Law of Sines/Cosines

The law of sines and cosines are two ways to solve triangles when they are not right triangles. The law of sines can be used when you have two sides and an opposite angle or two angles and an opposite side. The equation is sinA/a=sinB/b=sinC/c with the capital letters equaling the angles and the lowercase letters equaling the side lengths. The law of cosines can be used when you have 2 sides and an included angle or three sides and no angles. The equations for law of cosines are a^2=b^2+c^2-2(b)(c)(cosA), b^2=a^2+c^2-2(a)(c)(cosB), c^2=b^2+a^2-2(b)(a)(cosC).