Assume Za is opposite side a LB is opposite side b and 4y is opposite side c Solve triangle ABC if ZA a 40 8 b 12 1 km and c 17 3 km Using the Law of Cosines a km Your answer should accurate to 2 decimal places Using the Law of Cosines again cos B cos Your answer should accurate to 5 decimal places Thus Your answer should accurate to 2 decimal places cos C cos y Your answer should accurate to 5 decimal places Thus y Your answer should accurate to 2 decimal places