单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,第一章 解三角形,1,.1,正弦定理,和余弦定理,第,2,课时 正弦定理(,2,),1/44,2/44,3/44,a,b,c,2,R,sin,A,2,R,sin,B,2,R,sin,C,2,R,4/44,5/44,6/44,一解,两解,a,b,sin,A,7/44,8/44,9/44,10/44,11/44,12/44,13/44,14/44,15/44,16/44,17/44,18/44,19/44,20/44,21/44,22/44,23/44,24/44,25/44,26/44,27/44,28/44,29/44,30/44,31/44,32/44,33/44,34/44,35/44,36/44,37/44,38/44,39/44,40/44,41/44,42/44,43/44,谢谢观看,44/44,