Sin5度等于多少 sin多少度角等于0.5？
Sin18\u5ea6\u7b49\u4e8e\u591a\u5c11Sin18\u5ea6\u7b49\u4e8e0.309
sin\u591a\u5c11\u5ea6\u89d2\u7b49\u4e8e0.5\uff1f
sinA=0.5
\u56e0\u4e3aA=\uff08\u03c0/6\uff09+2k\u03c0, k\u5c5e\u4e8e\u6574\u6570
\u6240\u4ee5, sin(\uff08\u03c0/6\uff09+2k\u03c0)=0.5, k\u5c5e\u4e8e\u6574\u6570
\u4e3e\u4f8b\uff1a
sin30\u00b0=0.5
sin150\u00b0=0.5
\u89d2\u5ea6\u5236\u4e0e\u5f27\u5ea6\u5236\u4e0d\u80fd\u6df7\u7528\u3002
从sin30度开始慢慢展开..多次运用两倍角公式和两角和公式...
计算器算出来=0.087155742
0.087155742
角度0.087155742747658173558064270837474
弧度-0.95892427466313846889315440615599
梯度0.07845909572784494503296024599346
绛旓細sin5掳= 0.08715574275 鎵嬪伐杩戜技璁＄畻锛5掳= 蟺/36 y = sinx dy/dx = cosx sin5掳= sin0掳+ cos0掳(蟺/36)= 蟺/36 = 0.0872664626 璇樊 = 0.127
绛旓細sin15 掳 =sin(45 掳-30 掳)=sin45 掳cos30 掳-cos45 掳sin30 掳 =(鈭歜ai2/2)*(鈭3/2)-(鈭2/2)*(1/2)=(鈭6-鈭2)/4
绛旓細鐜板湪锛鎴戜滑灏5搴﹁涓何锛屼唬鍏ュ叕寮忥紝寮濮嬫垜浠殑璁＄畻涔嬫梾锛歴in(3 * 5掳) = 3sin(5掳) - 4sin^3(5掳)缁忚繃璁＄畻锛屾垜浠緱鍒帮細3sin(5掳) - 4sin^3(5掳) = sin(15掳)鎺ョ潃锛屾垜浠啀鍒╃敤鍙︿竴涓熀鏈殑涓夎鎭掔瓑寮忥紝sin(15掳) = sin(45掳 - 30掳)锛岃繖涓瓑寮忓皢15搴︽媶瑙ｄ负涓や釜鏇存槗浜庤绠楃殑...
绛旓細sin(5)=0.0871557
绛旓細0.08715574274765817355806427083747鈥﹀鏋滆鏃犵悊鏁拌〃绀哄厛姹俿in15 sin15=sin锛45-30锛=sin45cos30-sin30cos45=锛堟牴鍙6-鏍瑰彿2锛/4 sin15=sin5(1-2sin²5)-2sin5(1-sin²5)瑙ｅ嚭sin5
绛旓細sin5=-0.958924275 cos5=0.283662185 sin3=0.141120008 cos3=-0.989992497 浣犳槸澶у鐢熻繕鏄珮涓敓杩樻槸鍒濅腑鐢燂紵锛熷鏋滀綘鏄ぇ瀛︾敓閭ｄ箞鐩存帴鐢ㄨ绠楀櫒鎴栬呯數鑴戝氨鍙互鎼炲畾浜嗭紝濡傛灉浣犳槸楂樹腑鐢熼偅涔堜綘鍙互鐢ㄥ崐瑙掑叕寮忕洿鎺ユ眰锛1寮у害澶х害绛変簬57掳锛屽叾瀹炵敤鍗婅鍏紡涓鐩存眰涓嬪幓灏辨槸鎵璋撶殑涓夎鍑芥暟鍊艰〃锛岄珮涓簲璇ュ彲浠ユ煡...
绛旓細5掳=0.0873锛坮ad锛sin5掳=0.0872 鎵浠ュ皬瑙掑害杩戜技閲岄潰锛岃搴︼紙浠ュ姬搴︿负鍗曚綅锛夎繎浼绛変簬瑙掑害鐨勬寮﹀笺
绛旓細绾绛変簬0.0872
绛旓細sin(5) = -0.958924275 浣犲彲浠ュ湪GOOGLE閲岄潰鐩存帴杈撳叆瀹冧細甯綘璁＄畻鐨勩
绛旓細涓夎鍑芥暟琛ㄥ涓嬶細涓夎鍑芥暟鐨勬湰璐ㄦ槸浠讳綍瑙掔殑闆嗗悎涓庝竴涓瘮鍊肩殑闆嗗悎鐨勫彉閲忎箣闂寸殑鏄犲皠銆傞氬父鐨勪笁瑙掑嚱鏁版槸鍦ㄥ钩闈㈢洿瑙掑潗鏍囩郴涓畾涔夌殑銆傚叾瀹氫箟鍩熶负鏁翠釜瀹炴暟鍩熴傚彟涓绉嶅畾涔夋槸鍦ㄧ洿瑙掍笁瑙掑舰涓紝浣嗗苟涓嶅畬鍏ㄣ傜幇浠ｆ暟瀛︽妸瀹冧滑鎻忚堪鎴愭棤绌锋暟鍒楃殑鏋侀檺鍜屽井鍒嗘柟绋嬬殑瑙ｏ紝灏嗗叾瀹氫箟鎵╁睍鍒板鏁扮郴銆
