(本小题满分10分) 已知中,,,设. (1 )用表示; (11)求的单调递增区间. 答案:(10分) 解:在中,,,, 由正弦定理得,,. -----4分 (Ⅱ)由(Ⅰ)得 = ,----------8分 , 令,得, 又,的单调增区间为. --------------10分 ---I think you owe me some money? --- ________? My money has never been tight. A.How come B.Who says C.What for D.Why so