savvasrealize.com 8-3 Reteach to Build Understanding The Law of Sines 1. Complete the definition of the Law of Sines. In any triangle, the ratio of the sine of an angle to the length of the opposite side is constant. In AABC b with angles A, B, and C and opposite side lengths a, b, and c, the following relationship is true. B a _sin B =_ 2. What error does Teo make in finding the value of AC? What is the correct value of AC? Round to the nearest tenth. Use the Law of Sines. sin A _ sin B AC BA 1180 24 sin 118 sin 220 AC 24 220 B AC = 24 . sin 1180 sin 220 ~56.6 3. What is QR to the nearest tenth? Given information: 60 mLP opposite QR is mQ opposite PR is PR is Use the Law of Sines. 50 P 20 sin sin QR 20 . sin 50 = QR . sin OR _ 20 . sin sin 60