已知在△ABC中,三个内角A,B,C的对边分别为a,b,c,若△ABC的面积为S,且,则tanC等于 （ ）
( )This is the Bank ______China. A. of B. off C. for
( )He ______ on a farm. A.work B. to work C. works
( )_______she work in a company？ A. Does B. IsC. Are
( )The girl begins _________again. A. to study B. study C. studies
( )How many ______are there in your city? A. library B. libraries C. a library
,则tanC等于 （ ）
粤公网安备 44130202000953号