sin.cos.tan0度的三角函数值是多少? sin.tan.cos90度的三角函数值是多少?
sin.cos.tan180\u5ea6\u7684\u4e09\u89d2\u51fd\u6570\u503c\u5206\u522b\u662f\u591a\u5c11\uff1fsin180\u5ea6=0
cos180\u5ea6=-1
tan180\u5ea6=0
\u3000\u3000sin90\u5ea6\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e3a1\uff1b
\u3000\u3000tan90\u5ea6\u7684\u89d2\u51fd\u6570\u503c\u4e0d\u5b58\u5728\uff1b
\u3000\u3000cos90\u5ea6\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e3a0\u3002
\u3000\u3000sin,cos,tan\u7279\u6b8a\u89d2\u7684\u4e09\u89d2\u51fd\u6570\u503c\u8868\uff1a
\u3000\u3000sin\uff080\uff0c30\uff0c45\uff0c60\uff0c90\uff09=0\uff0c1/2,\u6839\u53f72/2,\u6839\u53f73/2,1
\u3000\u3000cos\uff080\uff0c30\uff0c45\uff0c60\uff0c90\uff09=1\uff0c\u6839\u53f73/2,\u6839\u53f72/2,1/2,0
\u3000\u3000tan\uff080\uff0c30\uff0c45\uff0c60\uff0c90\uff09=0\uff0c\u6839\u53f73/3,1,\u6839\u53f73\uff0c\u4e0d\u5b58\u5728\u3002
cos0°=1
tan0°=0
sincostan0=sincos0=sin1
sin0=0
cos0=1
tan0=0
sin1
绛旓細sin0掳=0 cos0掳=1 tan0掳=0
绛旓細鏍规嵁浠绘剰瑙掍笁瑙掑嚱鏁扮殑瀹氫箟锛屽湪鍗曚綅鍦嗕腑瑙扐鐨勯《鐐逛笌鍘熺偣閲嶅悎濮嬭竟涓巟杞存鍗婅酱閲嶅悎锛岃A缁堣竟涓庡崟浣嶅厓浜ょ偣鍧愭爣涓猴紙x锛寉)鍒檚inA=y锛宑osA=x锛宼anA=y/x 0搴濮嬭竟涓庣粓杈归噸鍚堬紝浜ょ偣鍧愭爣涓猴紙1锛0锛夊垯sin0掳=0锛cos0掳=1锛tan0掳=0 90掳鐨勭粓杈逛笌鍗曚綅鍦嗙殑浜ょ偣鍧愭爣涓猴紙0锛1锛夊垯sin90掳=1锛宑os90掳...
绛旓細360掳锛sin伪=0锛cos伪=1锛tan伪=0銆
绛旓細1銆佹寮︼細sin0掳=sin180掳=sin360掳=0锛宻in90掳=1锛宻in270掳=-1 2銆佷綑寮︼細cos0掳=cos360掳=1锛宑os90掳=cos270掳=0锛宑os180掳=-1 3銆佹鍒囷細tan0掳=tan180掳=tan360掳=0锛宼an90掳鍜宼an270掳鏃犳剰涔夈
绛旓細鐗规畩瑙掔殑涓夎鍑芥暟鍊硷細sin0掳=0锛cos0掳=1锛tan0掳=0锛泂in30掳=1/2锛宑os30掳=鏍瑰彿3/2锛宼an30掳=鏍瑰彿3/3锛泂in45掳=鏍瑰彿2/2锛宑os45掳=鏍瑰彿2/2锛宼an45掳=1锛泂in60掳=鏍瑰彿3/2锛宑os60掳=1/2锛宼an60掳=鏍瑰彿3锛泂in90掳=1锛宑os90掳=0銆傚崟浣嶅渾瀹氫箟锛氫篃鍙互渚濇嵁鍗婂緞涓1涓績涓哄師鐐圭殑鍗曚綅...
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sin0掳=0锛泂in90掳=1锛泂in180掳=0锛泂in270掳=-1锛泂in360掳=0锛cos0掳=1锛沜os90掳=0锛沜os180掳=-1锛沜os270掳=0锛沜os360掳=1锛tan0掳=0锛泃an90掳=1锛泃an180掳=0锛泃an360掳=0锛泃an270掳涓嶅瓨鍦紝270º涓嶆槸tan鍑芥暟鐨勫畾涔夊煙銆
绛旓細tan0=sin0/cos0=0/1=0 Tan鏄鍒囩殑鎰忔濓紝瑙捨稿湪浠绘剰鐩磋涓夎褰腑锛屼笌胃鐩稿搴旂殑瀵硅竟涓庨偦杈圭殑姣斿煎彨鍋氳胃鐨勬鍒囧笺傝嫢灏單告斁鍦ㄧ洿瑙掑潗鏍囩郴涓嵆tan胃=y/x銆倀anA=瀵硅竟/閭昏竟銆傚湪鐩磋鍧愭爣绯讳腑鐩稿綋浜庣洿绾跨殑鏂滅巼k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...
绛旓細1銆sin30掳=1/2銆乻in60掳=鈭3/2銆乻in90掳=1锛2銆cos30掳=鈭3/2銆乧os60掳=1/2銆乧os90掳=0锛3銆tan30掳=鈭3/3銆乼an60掳=鈭3銆乼an90掳涓嶅瓨鍦紝4銆乧ot30掳=鈭3銆乧ot60掳=鈭3/3銆乧ot90掳=0銆傚父瑙佺殑涓夎鍑芥暟鍖呮嫭姝e鸡鍑芥暟銆佷綑寮﹀嚱鏁板拰姝e垏鍑芥暟銆傚湪鑸捣瀛︺佹祴缁樺銆佸伐绋嬪绛夊叾浠栧绉戜腑...
绛旓細sin30掳=1/2 cos30掳=鈭3/2 tan30掳=鈭3/3 sin45掳=鈭2/2 cos45掳=鈭2/2 tan45掳=1 sin60掳=鈭3/2 cos60掳=1/2 tan60掳=鈭3 sin90掳=cos0掳=1 tan90掳涓嶅瓨鍦