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Watch Later 1:47

F.2_第11.4A章_什麼是正切?

Watch Later 3:14

F.2_第11.3C章_利用餘弦求未知量

Watch Later 2:04

F.2_第11.3B章_利用計算機從已知cos8求角8

Watch Later 2:16

F.2_第11.3A章_什麼是餘弦?

Watch Later 4:59

F.2_第11.2D章_利用正弦求未知量

Watch Later 3:28

F.2_第11.2C章_利用計算機從已知sin8求角8

Watch Later 2:33

F.2_第11.2B章_利用計算機求sin8

Watch Later 2:58

F.2_第11.2A章_什麼是正弦?

Watch Later 1:20

F.2_第11.1章_三角比的概念

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