已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101025717574440/SYS201311031010257175744019_ST/0.png)
,且B、C分别为△ABC的三边a、b、c所对的角.
(1)求角C的大小;
(2)若sinA,sinC,sinB成等差数列,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101025717574440/SYS201311031010257175744019_ST/1.png)
,求c边的长.
考点分析:
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