law of cosines 在 Find angles using the Law of Cosines - Mathematics Stack ... 的評價 By the Cosine Law, we have c2=a2+b2−2abcos(C). This can be rewritten as cos(C)=a2+b2−c22ab. Put a=2.3, b=4.6, and c=5.9. We get cos(C)=−0.395051. ... <看更多>
