In a triangle whose angles are A, B, and C and whose opposite sides are a, b, and c, the Law of Sines can be
written as: sin(A) / a = sin(B) / b = sin(C) / c or as a / sin(A) = b / sin(B) = c / sin(C)
If the unknown is an angle, use the formula on the left; if the unknown is a side, use the formula on the right because an equation is easier to solve if the unknown is in the numerator.
In either case, you don't use the whole equation at one time, just the fraction that contains the unknown and the fraction that contains the two parts (angle and side) that you know.
In a triangle whose angles are A, B, and C and whose opposite sides are a, b, and c, the Law of Sines can be
written as: sin(A) / a = sin(B) / b = sin(C) / c or as a / sin(A) = b / sin(B) = c / sin(C)
If the unknown is an angle, use the formula on the left; if the unknown is a side, use the formula on the right because an equation is easier to solve if the unknown is in the numerator.
In either case, you don't use the whole equation at one time, just the fraction that contains the unknown and the fraction that contains the two parts (angle and side) that you know.