F.4 basic trigonometry

-3-

2010-06-04 1:54 am

1)Simplify
http://img690.imageshack.us/img690/8643/dsc00586n.jpg

2)Simplify
http://img13.imageshack.us/img13/5766/dsc00585wk.jpg


please show clear steps.thank you!

回答 (1)

用戶7639

2010-06-04 2:47 am

✔ 最佳答案

圖片參考：http://h.imagehost.org/0531/ScreenHunter_04_Jun_03_18_46.gif


http://h.imagehost.org/0531/ScreenHunter_04_Jun_03_18_46.gif

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