已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102546758985848/SYS201311031025467589858015_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102546758985848/SYS201311031025467589858015_ST/1.png)
(x∈R),设函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102546758985848/SYS201311031025467589858015_ST/2.png)
.
(1)求函数f(x)的值域;
(2)已知锐角△ABC的三个内角分别为A,B,C,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102546758985848/SYS201311031025467589858015_ST/3.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102546758985848/SYS201311031025467589858015_ST/4.png)
,求f(C)的值.
考点分析:
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