[中學] 三角函數
各位前輩好
請問該題應該怎麼做呢
http://i.imgur.com/KCCegUc.jpg
感謝大大指教
謝謝
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※ 文章網址: https://www.ptt.cc/bbs/Math/M.1447311353.A.164.html
推
11/12 15:01, , 1F
11/12 15:01, 1F
推
11/12 15:49, , 2F
11/12 15:49, 2F
→
11/12 15:53, , 3F
11/12 15:53, 3F
推
11/12 16:07, , 4F
11/12 16:07, 4F
→
11/12 16:11, , 5F
11/12 16:11, 5F
推
11/12 16:11, , 6F
11/12 16:11, 6F
→
11/12 16:11, , 7F
11/12 16:11, 7F
→
11/12 16:12, , 8F
11/12 16:12, 8F
→
11/12 16:13, , 9F
11/12 16:13, 9F
→
11/12 16:14, , 10F
11/12 16:14, 10F
→
11/12 16:15, , 11F
11/12 16:15, 11F
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