cos1/x的平方
cos1/x的平方是(cos1/x)^2。cos1/x的平方即y=(cos1/x)^2，导数是1/x^2(sin2/x)，这是一个三重复合的复合函数。绛旓細cos1=0.54銆1寮у害鐨勮鍗虫槸鍛ㄨ鐨360鍒嗕箣涓锛屽嵆1搴︾殑瑙掞紝1rad=(180/蟺)鈮57.30掳锛屽洜姝os1瀹為檯涓婃寚鐨勬槸cos(57.30掳)=0.54銆俢os1鐨勮绠楁柟娉曟湁涓ょ锛氱鏄洿鎺ヤ娇鐢ㄥ畾鍊硷紝鍗砪os1=0.5403023058681398銆
绛旓細鍦ㄦ暟瀛︿腑瑙ｅ喅闂锛岄氬父鍏紡鏄緢閲嶈鐨勪竴閮ㄥ垎锛岃浣忓叕寮忓彲浠ュ緢鏂逛究鐨勫幓瑙ｅ喅闂锛屽ぇ澶у噺灏戜簡宸ヤ綔閲忓拰宸ヤ綔鏃堕棿锛屼竴涓叕寮忓氨鍙互瑙ｅ喅涓绫婚棶棰橈紝寰堝浜洪兘鎯崇煡閬cos1绛変簬澶氬皯鍊煎憿锛熷叾瀹瀋os1绛変簬0.9998476952銆俿in鍊煎拰cos鍊奸兘鏄笁瑙掑嚱鏁扮殑璁＄畻锛屾槸鍦ㄥ崟浣嶅渾涓婅瀹氱殑涓夎褰㈣竟鐨勬瘮鍊肩殑璁＄畻锛屼笁瑙掑嚱鏁扮殑杩愮畻鏄湪...
绛旓細鏄鐨勶紝cos1=0.54銆俢os1掳=0.9998銆1寮у害鐨勮鍗虫槸鍛ㄨ鐨360鍒嗕箣涓锛屽嵆1搴︾殑瑙掞紝1rad=(180/T)57.30掳锛屽洜姝os1瀹為檯涓婃寚鐨勬槸cos(57.30掳)銆傚悓瑙掍笁瑙掑嚱鏁扮殑鍩烘湰鍏崇郴寮 鍊掓暟鍏崇郴锛歵an伪 路cot伪=1銆乻in伪 路csc伪=1銆乧os伪 路sec伪=1銆傚晢鐨勫叧绯伙細 sin伪/cos伪=tan伪=sec伪/csc伪...
绛旓細57.30搴︺cos1鎸囩殑鏄1寮у害鐨勮鎵瀵圭殑浣欏鸡鍊硷紝1寮у害鐨勮鍗虫槸鍛ㄨ鐨360鍒嗕箣涓锛屽嵆1搴︾殑瑙掞紝1rad绛変簬180/蟺绛変簬57.30搴︼紝鍥犳cos1鐨勫兼槸cos57.30搴︺傚姬搴︽槸瑙掔殑搴﹂噺鍗曚綅锛屽畠鏄敱鍥介檯鍗曚綅鍒跺鍑虹殑鍗曚綅锛屽崟浣嶇缉鍐欐槸rad銆
绛旓細寮у害鐨勮鍗虫槸鍛ㄨ鐨360鍒嗕箣涓锛屽嵆1搴︾殑瑙掞紝1rad=(180/蟺)鈮57.30掳锛屽洜姝cos1瀹為檯涓婃寚鐨勬槸cos(57.30掳)銆備綑寮﹀畾鐞嗗垽鍒硶 涓ゆ牴鍒ゅ埆娉 鑻ヨm(c1,c2)涓篶鐨勪袱鍊间负姝ｆ牴鐨勪釜鏁帮紝c1涓篶鐨勮〃杈惧紡涓牴鍙峰墠鍙栧姞鍙风殑鍊硷紝c2涓篶鐨勮〃杈惧紡涓牴鍙峰墠鍙栧噺鍙风殑鍊硷細鈶犺嫢m(c1,c2)=2锛屽垯鏈変袱瑙ｏ紱鈶¤嫢m(...
绛旓細2pi=360搴=3.14*21=360掳/6.28=57.3掳cos1=cos57.3掳=0.54(鍧囨槸绾︾瓑)
绛旓細cos1鍦ㄦ暟瀛﹂噷鐨勬剰鎬濇槸1寮у害鐨勪綑寮﹀
绛旓細sin1=sin57.30`=0.8415 杩欓噷鐨勨1鈥濇槸鈥1寮у害鈥濓紝涓庘溌扳濈殑鎹㈢畻鏄細蟺=180掳 cos1=cos57.30`=鏍瑰彿锛1-sin57.30`锛==鏍瑰彿锛1-0.8415锛夋垨锛氳繖閲岀殑1鏄姬搴 濡傛灉鏄1掳鐨勮瘽灏辨槸sin1掳 鍥犱负蟺=180掳 鎵浠1=180掳/蟺=57.30掳 鐒跺悗鍐嶈绠楁寮﹀拰浣欏鸡 ...
绛旓細sin1=0.01745 cos1=0.9998 tan1=0.01746 cot1=57.29 sec1=1.000 csc1=57.30
绛旓細鐢变竴涓井绉垎鍏紡鍙煡锛歠(x+螖x)鈮坒(x)+f'(x)螖x (sinx)'=cosx;(cosx)'=鈥攕inx;(tanx)'=1/cos^2 x;(x^n)'=nx^(n-1)鎵浠cos 1=cos锛0+1锛夆増cos0-sin0*锛埾/180锛夛紙鎹㈡垚寮у害锛夌粨鏋滅害绛変簬0.98锛堢畻1搴﹀拰89搴︽椂璇樊杈冨ぇ30 60搴﹀乏鍙宠宸皬锛...
