Saⁿ-kak-hoat
Saⁿ-kak-hoat (trigonometry) sī sò͘-ha̍k ê 1 ki hun-ki, choan-tô͘ leh chhú-lí kak-tō͘ (angle), saⁿ-kak-hêng kap saⁿ-kak hâm-sò͘ (trigonometric function), chhiūⁿ kóng sin, cos ham tan. Saⁿ-kak-hoat ham kí-hô-ha̍k ū tī-tāi, chóng--sī in tiong-ng ū siáⁿ koan-liân, iáu bô kiōng-sek; ū koá lâng ti̍t-chiap kā saⁿ-kak-hoat tòng-chò kí-hô-ha̍k ê 1 pō͘-hūn.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Table_of_Trigonometry%2C_Cyclopaedia%2C_Volume_2.jpg/300px-Table_of_Trigonometry%2C_Cyclopaedia%2C_Volume_2.jpg)
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