知道圆弧的弧长和拱高，怎么求半径 急!知道弧长和拱高怎样求半径，记得写详细点
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\u5047\u8bbe\u5f27\u957fL\u6240\u5939\u89d2\u4e3a\u03b8
\u5219\u6709L=2\u03c0r\u00d7\u03b8/360
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\u6839\u636e\u4f59\u5f26\u5b9a\u7406\uff0ccos(\u03b8/2)=(r-h)/r
\u7ed3\u5408\u4e24\u5f0f,\u03b8=180L/\uff08\u03c0r\uff09\uff0c\u5219\u03b8/2=90L/\uff08\u03c0r\uff09
cos\uff08\u03b8/2\uff09=1-h/r
cos[90L/(\u03c0r)]=1-h/r
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n\u00b0\u7684\u5706\u5fc3\u89d2\u6240\u5bf9\u5f27\u957f\u4e3an\u03c0R/180\u00b0\uff0c\u5e7f\u4e49\u4e0a\u6307\u5149\u6ed1\u66f2\u7ebf\u7684\u5f27\u957f\u3002
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\u6839\u636e\u4f59\u5f26\u5b9a\u7406\uff0ccos(\u03b8/2)=(r-h)/r
\u7ed3\u5408\u4e24\u5f0f\uff0c\u03b8=180L/(\u03c0r)\uff0c\u5219\u03b8/2=90L/(\u03c0r)
cos(\u03b8/2)=1-h/r
cos[90L/(\u03c0r)]=1-h/r
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Rn+1=(1-(Rn*COS(C/(2*Rn))-Rn+H)/((C/2)*SIN(C/(2*Rn))-H))*Rn
R0=505
R1=479.915
R2=482.017
R3=482.034
R4=482.034
R=482.034毫米
绛旓細浠寮ч暱涓篖锛屾嫳楂涓篽锛屾眰鍗婂緞r 鍋囪寮ч暱L鎵澶硅涓何 鍒欐湁L=2蟺r脳胃/360 杩寮х殑涓や釜绔偣鍋氬渾寮у垏绾跨殑鍨傜嚎锛屼笌寮ч珮寤堕暱绾夸氦浜庣偣O锛岀偣O鍗充负鍦嗗績銆備袱鏉″瀭绾挎墍澶硅鍗充负胃锛屽姬绔偣鑷砄鐨勮窛绂诲嵆涓簉銆傛牴鎹綑寮﹀畾鐞嗭紝cos(胃/2)=(r-h)/r 缁撳悎涓ゅ紡,胃=180L/锛埾r锛夛紝鍒櫸/2=90L/锛埾r锛塩os...
绛旓細寮ч暱l=鍗婂緞脳鍦嗗績瑙 鎷遍珮h=鍗婂緞-鍗婂緞脳cos(½鍦嗗績瑙)璁惧崐寰=r锛屽渾蹇冭=胃锛屽彲浠ュ缓绔嬪涓嬭仈绔嬫柟绋 r路胃=l 鈶 r[1-cos(½胃)]=h 鈶 鈭碵1-cos(½胃)]/胃=h/l 浠(胃)=[1-cos(½胃)]/胃-h/l鐢ㄤ簩鍒嗘硶鎴栬绠楄蒋浠舵眰闆剁偣锛屽彲姹傚嚭胃浠ｅ洖鈶犲嵆鍙眰鍑哄崐寰勩...
绛旓細寮ч暱l=鍗婂緞脳鍦嗗績瑙 鎷遍珮h=鍗婂緞-鍗婂緞脳cos(½鍦嗗績瑙)璁惧崐寰=r锛屽渾蹇冭=胃锛屽彲浠ュ缓绔嬪涓嬭仈绔嬫柟绋 r路胃=l 鈶 r[1-cos(½胃)]=h 鈶 鈭碵1-cos(½胃)]/胃=h/l 浠(胃)=[1-cos(½胃)]/胃-h/l鐢ㄤ簩鍒嗘硶鎴栬绠楄蒋浠舵眰闆剁偣锛屽彲姹傚嚭胃 浠ｅ洖鈶犲嵆鍙眰鍑哄崐寰勩
绛旓細寮ч暱鏄疌=725姣背,鎷遍珮鏄疕=130姣背,鍗婂緞搴旇鏄灏戯紵Rn+1=(1-(Rn*COS(C/(2*Rn))-Rn+H)/((C/2)*SIN(C/(2*Rn))-H))*Rn R0=505 R1=479.915 R2=482.017 R3=482.034 R4=482.034 R=482.034姣背
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