tan30度是多少
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
同学您好，如果问题已解决，记得采纳哦~~~您的采纳是对我的肯定~
祝您策马奔腾哦~
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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
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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
绛旓細浣犲ソ锛绛変簬鈭3/3锛屽嵆3鍒嗕箣鏍瑰彿3 tan鏄鍒囩殑鎰忔濓紝灏嗚鍛藉悕涓何革紝閭ｄ箞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倀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
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...
