30度，45度，60度的三角函数值是多少嘞？
sin30°=1/2
cos30°=√3/2
tan30°=√3/3
cot30°=√3
sec30°=2√3/3
csc30°=2
============
sin45°=√2/2
cos45°=√2/2
tan45°=1
cot45°=1
sec45°=√2
csc45°=√2
==============
sin60°=√3/2
cos60°=1/2
tan60°=√3
cot60°=√3/3
sec60°=2
csc60°=2√3/3
绛旓細30搴銆45搴銆60搴鐨勪笁瑙掑嚱鏁板硷細1銆佹寮﹀硷細30搴︾瓑浜1/2锛45搴︾瓑浜庘垰2/2 锛60搴︾瓑浜庘垰3/2 銆2銆佷綑寮﹀硷細30搴︾瓑浜庘垰3/2锛45搴︾瓑浜庘垰2/2锛60搴︾瓑浜1/2銆3銆佹鍒囧硷細30搴︾瓑浜庘垰3/3锛45搴︾瓑浜1锛60搴︾瓑浜庘垰3銆
绛旓細30搴銆45搴︺60搴︾殑涓夎鍑芥暟鍊硷細浣欏鸡鍊硷細30搴︾瓑浜庘垰3/2锛45搴绛変簬鈭2/2锛60搴绛変簬1/2銆傛寮﹀硷細30搴︾瓑浜1/2锛45搴︾瓑浜庘垰2/2锛60搴︾瓑浜庘垰3/2銆傛鍒囧硷細30搴︾瓑浜庘垰3/3锛45搴︾瓑浜1锛60搴︾瓑浜庘垰3銆涓夎鍑鏁版槸鍩烘湰鍒濈瓑鍑芥暟涔嬩竴锛屾槸浠ヨ搴︼紙鏁板涓婃渶甯哥敤寮у害鍒讹紝涓嬪悓锛変负鑷彉閲忥紝瑙掑害瀵瑰簲浠绘剰...
绛旓細姝ｅ鸡鍊硷細30搴鏄簩鍒嗕箣涓锛45搴鏄簩鍒嗕箣鏍瑰彿浜 锛60搴鏄簩鍒嗕箣鏍瑰彿涓 銆備綑寮﹀硷細30搴︽槸浜屽垎涔嬫牴鍙蜂笁 锛45搴︽槸浜屽垎涔嬫牴鍙蜂簩 锛60搴︽槸浜屽垎涔嬩竴 銆傛鍒囧硷細30搴︽槸涓夊垎涔嬫牴鍙蜂笁 锛45搴︽槸涓 锛60搴︽槸鏍瑰彿涓 銆
绛旓細tan15=-0.855锛泃an15掳=2-鈭3 sin30=-0.988锛泂in30掳=1/2 cos30=0.154锛沜os30掳=鈭3/2 tan30=-6.405锛泃an30掳=鈭3/3 sin45=0.851锛泂in45掳=鈭2/2 cos45=0.525锛沜os45掳=sin45掳=鈭2/2 tan45=1.620锛泃an45掳=1 sin60=-0.305锛泂in60掳=鈭3/2 cos60=-0.952锛沜os...
绛旓細浣欏鸡鍊硷細30搴鏄簩鍒嗕箣鏍瑰彿涓 锛45搴鏄簩鍒嗕箣鏍瑰彿浜 锛60搴鏄簩鍒嗕箣涓 銆傛鍒囧硷細30搴︽槸涓夊垎涔嬫牴鍙蜂笁 锛45搴︽槸涓 锛60搴︽槸鏍瑰彿涓 銆傜浉鍏冲叕寮 cos(伪+尾)=cos伪路cos尾-sin伪路sin尾 cos(伪-尾)=cos伪路cos尾+sin伪路sin尾 sin(伪卤尾)=sin伪路cos尾卤cos伪路sin尾 tan(伪+尾)=...
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
绛旓細sin30掳=1/2 cos30掳=鈭3/2 tan30掳=鈭3/3 cot30掳=鈭3 sec30掳=2鈭3/3 csc30掳=2 === sin45掳=鈭2/2 cos45掳=鈭2/2 tan45掳=1 cot45掳=1 sec45掳=鈭2 csc45掳=鈭2 === sin60掳=鈭3/2 cos60掳=1/2 tan60掳=鈭3 cot60掳=鈭3/3 sec60掳=2 csc60掳=2鈭3/...
绛旓細30掳45掳60掳瑙鐨勪笁瑙姣斿涓嬨30搴銆45搴︺60搴︾殑涓夎鍑芥暟鍊硷細1銆佹寮﹀硷細30搴︾瓑浜1/2锛45搴绛変簬鈭2/2 锛60搴绛変簬鈭3/2 銆2銆佷綑寮﹀硷細30搴︾瓑浜庘垰3/2锛45搴︾瓑浜庘垰2/2锛60搴︾瓑浜1/2銆3銆佹鍒囧硷細30搴︾瓑浜庘垰3/3锛45搴︾瓑浜1锛60搴︾瓑浜庘垰3銆傚湪涓夎鍑鏁颁腑锛屾湁涓浜涚壒娈婅锛屽30掳銆45...
绛旓細sin30掳=1/2锛宻in45掳=鈭2/2锛宻in60掳=鈭3/2锛沜os30掳=鈭3/2锛宑os45掳=鈭2/2锛宑os60掳=1/2锛泃an30掳=鈭3/3锛宼an45掳=1锛宼an60掳=鈭3锛
绛旓細sin30=1/2 sin45=鈭2/2 sin60=鈭3/2 sinx鍑芥暟锛屽嵆姝ｅ鸡鍑芥暟锛屼笁瑙掑嚱鏁扮殑涓绉嶃傛寮﹀嚱鏁版槸涓夎鍑芥暟鐨勪竴绉嶃傚浜庝换鎰忎竴涓疄鏁皒閮藉搴旂潃鍞竴鐨勮锛堝姬搴﹀埗涓瓑浜庤繖涓疄鏁帮級锛岃岃繖涓鍙堝搴旂潃鍞竴纭畾鐨勬寮﹀約inx銆傝繖鏍凤紝瀵逛簬浠绘剰涓涓疄鏁皒閮芥湁鍞竴纭畾鐨勫約inx涓庡畠瀵瑰簲锛屾寜鐓ц繖涓搴旀硶鍒欐墍寤虹珛鐨...
