tan30等于多少
tan30\u7b49\u4e8e\u591a\u5c11?TAN30=(\u68393)/3
TAN45=1
TAN60=\u68393
TAN90\u4e0d\u5b58\u5728
\u8bf1\u5bfc\u516c\u5f0ftan\uff082k\u03c0+\u03b1\uff09=tan \u03b1tan(\u03c0/2-\u03b1\uff09=cot \u03b1 tan\uff08\u03c0/2+\u03b1\uff09=-cot \u03b1tan\uff08\u03c0+\u03b1\uff09=tan \u03b1tan\uff08\u03c0-\u03b1\uff09=-tan \u03b1\u4e24\u89d2\u548c\u5dee\u516c\u5f0ftan\uff08\u03b1+\u03b2\uff09=(tan\u03b1+tan\u03b2\uff09/\uff081-tan\u03b1\u00b7tan\u03b2\uff09tan\uff08\u03b1-\u03b2\uff09=(tan\u03b1-tan\u03b2\uff09/\uff081+tan\u03b1\u00b7tan\u03b2\uff09tg(a+b+c)=tg\u03b1+tgb+tgc-tgatgbtgc/1-tgatgb-tgctgb-tgatgc\u4e07\u80fd\u516c\u5f0f\u5373\u7528tga/2\u8868\u793a\u4e09\u89d2\u51fd\u6570\u7684sina=\uff082tga/2\uff09/\uff081+tg^2a/2\uff09cosa=\uff081-tg^2a/2\uff09/\uff081+tg^2a/2\uff09tga=\uff082tga/2\uff09/\uff081-tg^2a/2\uff09cota=\uff081-tg^2a/2\uff09/\uff082tga/2\uff09seca=\uff081+tg^2a/2\uff09/\uff082tga/2\uff09csca=\uff081+tg^2a/2\uff09/\uff082tga/2\uff09tanA=sina/cosa=(bc/ab)*(ab/ac)=bc/ac(\u5176\u4e2dsina=bc/ab cosa=ac/ab)
tan30°=3分之√3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 =鈭3/3= 0.57735026919锛堢害绛変簬 0.58锛銆倀an30搴︾瓑浜庢寮30搴﹂櫎浠ヤ綑寮30搴︼紝鑰屾寮30搴︿负1/2锛屼綑寮30搴︿负鈭3/2锛屾墍浠an30搴=1/鈭3锛屽寲绠鍚庣害绛変簬0.57735026919銆傜洿瑙掍笁瑙掑舰涓紝姝ｅ垏鏄寚涓涓攼瑙掔殑鐩稿杈瑰浜庤瑙掔殑閭昏竟鐨勬瘮鍊笺傛鍒囩殑瀹氫箟鍙互杞寲涓猴細瀵逛簬涓涓攼瑙扐锛屾鍒囩殑鍏紡涓...
绛旓細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os60掳=1/2 tan60=0.320锛泃an60掳=鈭3 sin90=0.894锛泂in90掳=cos0掳=1 cos90=-0.448锛沜os90...
绛旓細tan30搴﹀肩瓑浜0.57735026918963銆俆an30搴︽槸30搴︾殑姝ｅ垏鍊硷紝绛変簬3鍒嗕箣鏍瑰彿3銆倀an30搴=3鍒嗕箣鏍瑰彿3=0.57735026918963銆倀an30搴︾瓑浜庝笁鍒嗕箣鏍瑰彿涓夛紝tan鍦ㄦ暟瀛﹀嚱鏁颁腑浠ｈ〃姝ｅ垏鍊笺倀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硷紝鏀惧湪鐩磋鍧愭爣绯讳腑銆倀an30搴︾瓑浜庝笁鍒嗕箣鏍瑰彿涓夈傚钩闈笁瑙掑舰涓紝姝ｅ垏瀹氱悊璇存槑浠绘剰...
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掳=鈭3/3 鐗规畩瑙掔殑涓夎鍑芥暟鍊兼槸闇瑕佽儗鐔熺殑锛屽湪瑙ｉ鐨勬椂鍊欓潪甯告湁鐢ㄣ傜壒娈婅鐨勪笁瑙掑嚱鏁板兼槸鍙互閫氳繃鏋勯犱笁瑙掑舰锛屽埄鐢ㄤ笁瑙掑嚱鏁扮殑瀹氫箟鐩存帴璁＄畻鍑烘潵鐨勩
绛旓細鍗硉anB=AC/BC銆傚叾涓紝b/a銆丄C/BC琛ㄧず涓ゆ潯杈广tan30搴鍊绛変簬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=鈭3/3锛泃an45搴=1锛泃an60=鈭3锛泃an90搴︽棤瑙ｃ傚湪涓夎鍑芥暟涓紝鏈変竴浜涚壒娈婅锛屼緥濡30掳銆45掳銆60掳锛岃繖浜涜鐨勪笁瑙掑嚱鏁板间负绠鍗曞崟椤瑰紡锛岃绠椾腑鍙互鐩存帴姹傚嚭鍏蜂綋鐨勫硷紝鍏蜂綋濡備笅琛細涓夎鍑芥暟鏄熀鏈垵绛夊嚱鏁颁箣涓锛屾槸浠ヨ搴︼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瑙掔粓杈逛笌鍗曚綅鍦...
绛旓細tan30搴鏄 30搴︾殑姝ｅ垏鍊,绛変簬3鍒嗕箣鏍瑰彿3銆
绛旓細鈭3/3銆傛牴鎹煡璇㈢櫨搴︾櫨绉戞樉绀猴紝tan30搴︾瓑浜鈭3/3銆傛鍒囷紝鏁板鏈锛屽湪Rt鈻矨BC锛堢洿瑙掍笁瑙掑舰锛変腑锛屸垹C=90掳锛孉B鏄垹C鐨勫杈筩锛孊C鏄垹A鐨勫杈筧锛孉C鏄垹B鐨勫杈筨锛屾鍒囧嚱鏁板氨鏄痶anB=b/a锛屽嵆tanB=AC/BC銆
