From Wikipedia, the free encyclopedia
三角學(Trigonometry)係數學一支,專門處理角,三角形同埋三角函數。佢同幾何學有關,有人認為三角學係幾何學一門,但係亦都有人唔同意咁講。
三角學開頭可以追到古埃及,美索不達米亞,同印度河谷文明,多過四千年歷史。巴比倫人可能由佢哋六十進制發展出三角學。
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