Tangent
[ 't?nd??nt ]
出國 Abroad
n. <數>正切;突然轉移話題;突兀的轉向;（鐵路或道路的）直線區間;
adj. <數>正切的;相切的;切線的;離題的;
?? 詞根助記
tang接觸+ent具有...性質的→相切的；接觸的
?? 例句
tangent plane
切面
tangent remarks
扯得離題太遠
The tangent may be used to find the direction.
這方向也可用正切求得。
For ?0 we naturally get a circle; for ?0 we obtain two tangent circles.
對?0我們當然得到一個圓；對?0得到兩個相切的圓。
a straight line tangent to a curve
與曲線相切的直線
?? 聯想助記
【記】tang-tag接觸,ent-形綴:和圓接觸的線→切線,離圓心比較遠→離題
? 同義詞
?? 牛津釋義
tangent
n
1 (geometry 幾) straight line that touches the outside of a curve but does not cross it 切線. =>illus at circle 見circle插圖.2 (abbr 縮寫 tan) (mathematics 數) (in a right-angled triangle) ratio of the sides opposite and adjacent to a given angle 正切. Cf 參看 cosine, sine.
3 (idm 習語) go/fly off at a `tangent change suddenly from one line of thought, action, etc to another 突然改變思想、 行動等.
?? 擴展釋義
*['t?nd??nt]a. 接觸的, 正切的, 離題的n. 切線, 正切【電】 正切相關詞組: go off at a tangent
?? 醫學釋義
切線，正切
?? 同為「GMAT」詞匯
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That's alright. You're a lot of help.
沒關系。你幫了很大的忙。
I adore ice cream.
我非常喜歡冰淇淋。
Ashamed of having acted so rashly, Dimitri apologized to Aleko for having accused him.
迪米特里為自己的魯莽而感到不好意思，向阿列科道了歉，說是錯怪了他。