三角函数公式汇总表
[size=24pt][font=宋体]三角公式总表[/font][/size][size=24pt][/size][size=16pt]⒈[/size][size=16pt]L[/size][size=16pt][font=宋体]弧长[/font][/size][size=16pt]=[/size][img=20,26]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image1.wmf[/img][size=16pt]R=[/size]
180(nπR)[size=16pt] S[/size][size=16pt][font=宋体]扇[/font][/size][size=16pt]=[/size][img=16,41]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image2.wmf[/img][size=10.5pt]L[/size][size=15pt]R=[/size][img=16,41]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image2.wmf[/img][size=14pt]R[/size][size=14pt]2[/size][img=20,26]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image1.wmf[/img][size=16pt]=[/size][img=52,44]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image3.wmf[/img][size=16pt][/size]
[size=16pt]⒉[/size][size=16pt][font=宋体]正弦定理：[/font][/size][img=38,41]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image4.wmf[/img][size=10.5pt]=[/size][img=40,41]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image5.wmf[/img][size=10.5pt]=[/size][img=40,41]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image6.wmf[/img][size=10.5pt]= [/size][size=15pt]2R[/size][size=10.5pt][font=宋体]（[/font][/size][size=16pt]R[font=宋体]为三角形外接圆半径[/font][/size][size=10.5pt][font=宋体]）[/font][/size][size=10.5pt][/size]
[size=16pt]⒊[/size][size=16pt][font=宋体]余弦定理：[/font][/size][size=16pt]a[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]=b[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]+c[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]-2bc[/size][img=41,18]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image8.wmf[/img][size=16pt] b[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]=a[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]+c[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]-2ac[/size][img=38,17]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image9.wmf[/img]
[size=16pt]c[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]=a[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]+b[/size][img=10,20]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image7.wmf[/img][size=16pt]-2ab[/size][img=38,18]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image10.wmf[/img]
[img=136,44]file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image11.wmf[/img]
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