tan30度为多少
tan30\u5ea6\u7b49\u4e8e\u591a\u5c11tan30\u5ea6\u7b49\u4e8e\u221a3/3.
\u4e24\u89d2\u548c\u4e0e\u5dee\u7684\u4e09\u89d2\u51fd\u6570\uff1a
cos(\u03b1+\u03b2)=cos\u03b1\u00b7cos\u03b2-sin\u03b1\u00b7sin\u03b2
cos(\u03b1-\u03b2)=cos\u03b1\u00b7cos\u03b2+sin\u03b1\u00b7sin\u03b2
sin(\u03b1\u00b1\u03b2)=sin\u03b1\u00b7cos\u03b2\u00b1cos\u03b1\u00b7sin\u03b2
tan(\u03b1+\u03b2)=(tan\u03b1+tan\u03b2)/(1-tan\u03b1\u00b7tan\u03b2)
tan(\u03b1-\u03b2)=(tan\u03b1-tan\u03b2)/(1+tan\u03b1\u00b7tan\u03b2)
\u6269\u5c55\u8d44\u6599\uff1a
\u5728\u5e73\u9762\u4e09\u89d2\u5f62\u4e2d\uff0c\u6b63\u5207\u5b9a\u7406\u8bf4\u660e\u4efb\u610f\u4e24\u6761\u8fb9\u7684\u548c\u9664\u4ee5\u7b2c\u4e00\u6761\u8fb9\u51cf\u7b2c\u4e8c\u6761\u8fb9\u7684\u5dee\u6240\u5f97\u7684\u5546\u7b49\u4e8e\u8fd9\u4e24\u6761\u8fb9\u7684\u5bf9\u89d2\u7684\u548c\u7684\u4e00\u534a\u7684\u6b63\u5207\u9664\u4ee5\u7b2c\u4e00\u6761\u8fb9\u5bf9\u89d2\u51cf\u7b2c\u4e8c\u6761\u8fb9\u5bf9\u89d2\u7684\u5dee\u7684\u4e00\u534a\u7684\u6b63\u5207\u6240\u5f97\u7684\u5546\u3002
\u7531\u4e8e\u4e09\u89d2\u51fd\u6570\u7684\u5468\u671f\u6027\uff0c\u5b83\u5e76\u4e0d\u5177\u6709\u5355\u503c\u51fd\u6570\u610f\u4e49\u4e0a\u7684\u53cd\u51fd\u6570\u3002\u4e09\u89d2\u51fd\u6570\u5728\u590d\u6570\u4e2d\u6709\u8f83\u4e3a\u91cd\u8981\u7684\u5e94\u7528\u3002\u5728\u7269\u7406\u5b66\u4e2d\uff0c\u4e09\u89d2\u51fd\u6570\u4e5f\u662f\u5e38\u7528\u7684\u5de5\u5177\u3002
tan30\u5ea6\u662f 30\u5ea6\u7684\u6b63\u5207\u503c,\u7b49\u4e8e3\u5206\u4e4b\u6839\u53f73\u3002
\u62d3\u5c55\u8d44\u6599
\u6570\u5b66\u65b9\u7a0b\u5f0f
\u6570\u5173\u7cfb
tan\u03b1 \u00b7cot\u03b1=1
sin\u03b1 \u00b7csc\u03b1=1
cos\u03b1 \u00b7sec\u03b1=1
\u5546\u7684\u5173\u7cfb
tan\u03b1=sin\u03b1/cos\u03b1 cot\u03b1=cos\u03b1/sin\u03b1
\u5e73\u65b9\u5173\u7cfb
\u4ee5\u4e0b\u5173\u7cfb\uff0c\u51fd\u6570\u540d\u4e0d\u53d8\uff0c\u7b26\u53f7\u770b\u8c61\u9650.
sin\uff082k\u03c0+\u03b1\uff09=sin\u03b1
cos\uff082k\u03c0+\u03b1\uff09=cos\u03b1
tan\uff082k\u03c0+\u03b1\uff09=tan\u03b1
cot\uff082k\u03c0+\u03b1\uff09=cot\u03b1
sin\uff08\u03c0+\u03b1\uff09=-sin\u03b1
cos\uff08\u03c0+\u03b1\uff09=-cos\u03b1
tan\uff08\u03c0+\u03b1\uff09=tan\u03b1
cot\uff08\u03c0+\u03b1\uff09=cot\u03b1
sin\uff08\u03c0\uff0d\u03b1\uff09=sin\u03b1
cos\uff08\u03c0\uff0d\u03b1\uff09=-cos\u03b1
tan\uff08\u03c0\uff0d\u03b1\uff09=-tan\u03b1
cot\uff08\u03c0\uff0d\u03b1\uff09=-cot\u03b1
sin\uff082\u03c0\uff0d\u03b1\uff09=-sin\u03b1
cos\uff082\u03c0\uff0d\u03b1\uff09=cos\u03b1
tan\uff082\u03c0\uff0d\u03b1\uff09=-tan\u03b1
cot\uff082\u03c0\uff0d\u03b1\uff09=-cot\u03b1
\u4ee5\u4e0b\u5173\u7cfb\uff0c\u5947\u53d8\u5076\u4e0d\u53d8\uff0c\u7b26\u53f7\u770b\u8c61\u9650
sin\uff0890\u00b0-\u03b1\uff09=cos\u03b1
cos\uff0890\u00b0-\u03b1\uff09=sin\u03b1
tan\uff0890\u00b0-\u03b1\uff09=cot\u03b1
cot\uff0890\u00b0-\u03b1\uff09=tan\u03b1
sin\uff0890\u00b0+\u03b1\uff09=cos\u03b1
cos\uff0890\u00b0+\u03b1\uff09=-sin\u03b1
tan\uff0890\u00b0+\u03b1\uff09=-cot\u03b1
cos\uff0890\u00b0+\u03b1\uff09=-tan\u03b1
sin\uff08270\u00b0-\u03b1)=-cos\u03b1
cos\uff08270\u00b0-\u03b1)=-sin\u03b1
tan\uff08270\u00b0-\u03b1)=cot\u03b1
cot\uff08270\u00b0-\u03b1)=tan\u03b1
sin\uff08270\u00b0+\u03b1\uff09=\uff0dcos\u03b1
cos\uff08270\u00b0+\u03b1\uff09=sin\u03b1
tan\uff08270\u00b0+\u03b1\uff09=-cot\u03b1
cot\uff08270\u00b0+\u03b1\uff09=-tan\u03b1
tan60=根号3
tan45=1
tan30=3分之根号3
0.577
绛旓細tan30搴 =√3/3=0.57735026919(绾︾瓑浜 0.58)銆tan30搴︾瓑浜庢寮30搴﹂櫎浠ヤ綑寮30搴锛岃屾寮30搴︿负1/2锛屼綑寮30搴︿负√3/2锛屾墍浠an30搴=1/√3锛屽寲绠鍚庣害绛変簬0.57735026919銆傚湪鐩磋涓夎褰腑锛岃30°瑙掓墍瀵圭殑鐩磋杈归暱涓篴锛岄偅涔堟枩杈归暱涓2a锛屽彟涓鏉＄洿瑙掕竟闀=√[(2a)&...
绛旓細tan30搴︾瓑浜庘垰3/3.涓よ鍜屼笌宸殑涓夎鍑芥暟锛歝os(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)=(tan伪+tan尾)/(1-tan伪路tan尾)tan(伪-尾)=(tan伪-tan尾)/(1+tan伪路tan尾)...
绛旓細tan30搴︿负鈭3/3锛宼an30º鍗虫槸鐩磋涓夎褰腑30º瀵瑰簲鐨勭洿瑙掕竟涓庡叾鐩搁偦鐩磋杈圭殑姣斿硷紝鍗3鍒嗕箣鏍瑰彿3銆倀an鏄洿瑙掍笁瑙掑嚱鏁颁腑鐨勬鍒囧硷紝鏄寚鍦ㄤ笁瑙掑嚱鏁颁腑瀵硅竟涓庨偦杈圭殑姣斿硷紝鏀惧湪鐩磋鍧愭爣绯讳腑鍗硉an胃锛漼/x銆備互鏂滆竟闀夸负c锛屽杈归暱涓篴锛岄偦杈归暱涓篵鐨勭洿瑙掍笁瑙掑舰锛堝嵆a瀵瑰簲瑙扐锛宐瀵瑰簲瑙払锛宑瀵瑰簲...
绛旓細tan30搴﹀肩瓑浜0.57735026919锛岄渶瑕佷繚鐣欏皬鏁扮偣鍚庝袱浣嶏紝鏍规嵁鍥涜垗浜斿叆鍘熷垯锛屽湪闇瑕佷繚鐣欐湁鏁堟暟瀛楃殑浣嶆鍚庝竴浣嶏紝閫簲灏辫繘涓锛岄㈠洓灏辫垗銆7婊′簲锛岃繘涓浣嶏紝绾︾瓑浜0.58銆傛鍒囧嚱鏁板叕寮忎负tan30掳=鏍瑰彿3闄や互3銆乼an45掳=1锛宼an60掳=鏍瑰彿3銆
绛旓細tan30搴︾瓑浜庝笁鍒嗕箣鏍瑰彿涓锛屽皬鏁板舰寮忕殑璇濇槸鏃犻檺鐨勩備笁瑙掑嚱鏁版槸鏁板涓睘浜庡垵绛夊嚱鏁颁腑鐨勮秴瓒婂嚱鏁扮殑鍑芥暟銆傚畠浠殑鏈川鏄换浣曡鐨勯泦鍚堜笌涓涓瘮鍊肩殑闆嗗悎鐨勫彉閲忎箣闂寸殑鏄犲皠銆備笁瑙掑嚱鏁板叕寮忕湅浼煎緢澶氥佸緢澶嶆潅锛屼絾鍙鎺屾彙浜嗕笁瑙掑嚱鏁扮殑鏈川鍙婂唴閮ㄨ寰嬶紝灏变細鍙戠幇涓夎鍑芥暟鍚勪釜鍏紡涔嬮棿鏈夊己澶х殑鑱旂郴銆傝屾帉鎻′笁瑙掑嚱鏁扮殑鍐呴儴瑙勫緥...
绛旓細tan30搴︽槸 30搴︾殑姝ｅ垏鍊,绛変簬3鍒嗕箣鏍瑰彿3銆
绛旓細1銆 tan30掳=鈭3/3 =0.57735026918963銆2銆佷互鏂滆竟闀夸负c锛屽杈归暱涓篴锛岄偦杈归暱涓篵鐨勭洿瑙掍笁瑙掑舰鎵撴瘮鏂癸紝tan鍦ㄦ暟瀛﹀嚱鏁颁腑浠ｈ〃姝ｅ垏鍊硷紝鍒檛an鈭1=a:b锛屽湪鐭ラ亾涓ゆ潯鐩磋杈规椂鍙敤tan姹傗垹1鐨勬鍒囧笺3銆乼an鏄鍒囧嚱鏁版槸鐩磋涓夎褰腑锛屽杈逛笌閭昏竟鐨勬瘮鍊笺傛斁鍦ㄧ洿瑙掑潗鏍囩郴涓嵆 tan胃=y/x銆
绛旓細1銆tan30锛3鍒嗕箣鏍瑰彿3 2銆乼an45锛1 3銆乼an60锛濇牴鍙3 4銆乼an90涓嶅瓨鍦
绛旓細tan30掳=鈭3/3 瀵逛簬30掳銆45掳锛60掳杩欐牱鐨勨滅壒娈婅鈥濈殑涓夎鍑芥暟鍊硷紝鏄渶瑕佽浣忥紝鑳岀啛鐨勩
绛旓細tan30掳鐨勫兼槸0.5773502691896257銆傜煡璇嗘墿灞 tan鏄鍒囩殑鑻辨枃缂╁啓锛屽畠鏄竴绉嶄笁瑙掑嚱鏁帮紝琛ㄧず鐩磋涓夎褰腑涓涓攼瑙掔殑瀵硅竟涓庨偦杈圭殑姣斿笺傛鍒囧嚱鏁板湪鏁板鍜屽伐绋嬮鍩熸湁骞挎硾鐨勫簲鐢紝鐗瑰埆鏄湪瑙ｅ喅涓庤搴﹀拰杈归暱鐩稿叧鐨勯棶棰樻椂銆傛鍒囧嚱鏁扮殑鍩烘湰瀹氫箟鏄細璁剧洿瑙掍笁瑙掑舰涓湁涓涓攼瑙捨革紝鍏跺杈归暱搴︿负b锛岄偦杈归暱搴︿负a锛...
