2014-2015学年高二数学北师大版必修5同步训练2.1.2余弦定理1

1.2　余弦定理(一)INCLUDEPICTURE"左括.TIF"课时目标INCLUDEPICTURE"右括.TIF"　1.熟记余弦定理及其推论；2.能够初步运用余弦定理解斜三角形．INCLUDEPI