In intemationai air cargo transportation, General Cargo Rates are applicable to named types of commodity and Specific Commodity Rates are applicable to any type of commodity. ( )
【简答题】设a∈R, f(x)=cosx(asinx-cosx)+co s 2 ( π 2 -x) 满足 f(- π 3 )=f(0) , (Ⅰ)求函数f(x)的单调递增区间; (Ⅱ)设△ABC三内角A,B,C所对边分别为a,b,c且 a 2 + c 2 - b 2 a 2 + b 2 - c 2 = c 2a-c ,求f(x)在(0,B]上的值域.