arccos(-根号3／2)=？，arcsin0=?,arctan(-根号3)=？ arccos根号3/3等于arctan根号2/2么？
arccos[(\u221a3)/2]=\u8bbearccos[(\u221a3)/2]=A.\u5219cosA=(\u221a3)/2
\u5176\u4e2d0<A<180\u5ea6
\u6240\u4ee5\u3002A=30\u5ea6
\u4e0d\u662f\u7684
x=arccos\u6839\u53f73/3
\u5219cosx=\u6839\u53f73/3\uff0c sinx =\uff08\u68396/3\uff09
tanx=\uff08\u68396/3\uff09/\uff08\u68393/3\uff09=\u68392
第二个零度
第三个-60度
绛旓細A=(120+180N)搴,N鏄潪璐熸暣鏁 鍥犱负姝ｅ鸡鍑芥暟鐨勫懆鏈熸
绛旓細X=arc cos锛-鏍瑰彿3/2锛=2K蟺-arccos锛堟牴鍙3/2锛=2K蟺-蟺/6(K鈭圸)sinx=-1/2 X=arc sin锛-1/2锛=K蟺-arc sin锛-1/2锛=K蟺-蟺/6(K鈭圸)x鈭堛0,2蟺锛墄鏄鍥涜薄闄愮殑瑙,K鍙1 x=2蟺-蟺/6=11蟺/6
绛旓細arcsin0=0,arcsin(1/2)=蟺/6,arcsin(鈭歛rcsin(鈭3/2)=蟺/3,arcsin1=蟺/2atccos1=0,arccos(鈭3/2)=蟺/6,arccos(鈭2/2)=蟺/4,arccos(1/2)=蟺/3,arccos0=蟺/2arctan0=0,arctan(鈭3/3)=蟺/6,arctan(1)=蟺/4,arctan(鈭3)=蟺/3,arctan0=蟺/2 ...
绛旓細x锛210搴﹀嵆 7/6鍏 鎬濊矾銆傘傘cos(30)=鏍瑰彿3 /2鍙堝洜涓簒鐨勫彇鍊艰寖鍥村棰 cos (180+30)=锛嶆牴鍙3 /2 鎵浠ュ緱鍑虹粨璁恒傘傘
绛旓細arccos 1=0锛沘rccos 0.5=pi/3锛arccos (浜屽垎涔嬫牴浜)=pi/4锛沘rccos (浜屽垎涔嬫牴涓)=pi/6 arccos arccos琛ㄧず鐨勬槸鍙嶄笁瑙掑嚱鏁颁腑鐨勫弽浣欏鸡銆備竴鑸敤浜庤〃绀哄綋瑙掑害涓洪潪鐗规畩瑙掓椂銆傜敱浜庢槸澶氬煎嚱鏁帮紝寰寰鍙栧畠鐨勫崟鍊硷紝鍊煎煙涓篬0锛屜]锛岃浣測=arccosx锛屾垜浠О瀹冨彨鍋氬弽涓夎鍑芥暟涓殑鍙嶄綑寮﹀嚱鏁扮殑涓诲笺傚簲鐢...
绛旓細cos(x)=鈭2/3 x=ArcCos(鈭2/3)=1.0799136485055852506504128103829119960996575407886...=61.874494297944293908702166372228836034797600213877...掳
绛旓細浣犲啓鐨勫紡瀛愭槸涓嶅鐨.arccos[cos(-2蟺/6)]琛ㄧず鎶奵os(-2蟺/6)浣滀负鍊,鐪嬪摢涓鏈夎繖涓壒鐐.瀹冨彲浠ユ垚涓篴rccos(1/2)琛ㄧず浣欏鸡鍊间负1/2鐨刐0,蟺]涔嬮棿鐨勮,鍗充负蟺/3 鍚岀悊,绗簩涓紡瀛=arccos(-鏍瑰彿3/2)浣欏鸡鍊间负-鏍瑰彿3/2鐨刐0,蟺]涔嬮棿鐨勮,鍗充负5蟺/6 ...
绛旓細0锛屜]锛屼笖淇濊瘉a鈭堛-1锛1銆戯紝濡倄鈭堛-蟺锛0]锛宑osx=-鈭3/2 鍒檆os锛坸+蟺锛=-cosx=鈭3/2 (娉ㄦ剰x+蟺鈭堛0锛屜]锛-鈭3/2鍙樻垚浜嗏垰3/2锛屽師寮忓彉鎴愪簡cos锛坸+蟺锛=鈭3/2锛屽畬鍏ㄧ鍚堝弽浣欏鸡鍑芥暟鐨勫畾涔夛級鏁厁+蟺=arccos锛鈭3/2锛=蟺/6.鏁厁=蟺/6-蟺=-锛5蟺锛/6 ...
绛旓細=3蟺/4
绛旓細鈭cos锛2k蟺卤蟺/6锛=鈭3/2 鈭村弽涓夎arccos浜鍒嗕箣鏍瑰彿涓=2k蟺卤蟺/6
