close
標題:
sin 15 and cos 15
發問:
Given that sin 30 = 1/2 and cos 30 = (sqrt3)/2, express sin 15 and cos 15 in surd form.
最佳解答:
express sin 15o and cos 15o in surd form. 圖片參考:http://f.imagehost.org/0191/ScreenHunter_04_May_14_22_18.gif 2009-05-16 10:05:25 補充: sin 15: http://f.imagehost.org/0658/ScreenHunter_03_May_14_22_17.gif
其他解答:
文章標籤
全站熱搜
留言列表