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Erica
Joined: 11 Aug 2004Posts: 12
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Posted: Sat Apr 23, 2005 7:56 pm Post subject: */’三”角++
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1.等腰三角形的頂角的正弦為7/25, 則底角為_________(係cosine的反函數形式). 2. 在[-1, 3/2]上與函數y=x相同的函數是_________ (a)y=arccos(cosx) (b)y=arcsin(sinx) (c)y=sin(arcsinx)
(d)y=cos(arccosx)
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