檢視正弦定理的原始碼

{| class="wikitable" align="right"
|-
| style="background: #FF2400" align= center|  '''<big>正弦定理</big>'''
|-
|<center><img src=https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fwww.mianfeiwendang.com%2Fpic%2F8450344524f07a2158e8c3e8%2F4-810-jpg_6-1080-0-0-1080.jpg&refer=http%3A%2F%2Fwww.mianfeiwendang.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1657231089&t=4271d0957c5db82a63cc84f85d3b2b96 width="300"></center>
<small>[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E6%AD%A3%E5%BC%A6%E5%AE%9A%E7%90%86&step_word=&hs=0&pn=7&spn=0&di=7084067677328637953&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1747378018%2C383411508&os=2149897620%2C1933788644&simid=1747378018%2C383411508&adpicid=0&lpn=0&ln=1799&fr=&fmq=1654639110988_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fwww.mianfeiwendang.com%2Fpic%2F8450344524f07a2158e8c3e8%2F4-810-jpg_6-1080-0-0-1080.jpg%26refer%3Dhttp%3A%2F%2Fwww.mianfeiwendang.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1657231089%26t%3D4271d0957c5db82a63cc84f85d3b2b96&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3B4twgujtojg1wg2_z%26e3Bv54AzdH3F15vAzdH3Fb9can99cd9ua0wd8cbjbvnjbAzdH3F9&gsm=8&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCwzLDIsNSw2LDQsMSw3LDgsOQ%3D%3D 来自 呢图网 的图片]</small>
|-
| style="background: #FF2400" align= center|  '''<big></big>'''

|-

| align= light|

中文名；正弦定理

外文名；The Law of Sines

表达式；a:b:c＝sinA:sinB:sinC

提出者；纳绥尔丁

提出时间；公元10世纪

应用学科；数学

适用领域范围；三角函数

突出贡献者；韦达、海伦、秦九韶
|}
'''正弦定理'''（The Law of Sines）是三角学中的一个基本定理，它指出“在任意一个平面[[三角形]]中，各边和它所对角的正弦值的比相等且等于外接圆的[[直径]]”，即a/sinA = b/sinB =c/sinC = 2r=D（r为外接圆半径，D为直径）。<ref>[https://wenku.baidu.com/view/402dd2d733d4b14e852468af.html 正弦定理公式],百度文库 , 2020年11月28日</ref>