定义域在R的偶函数f（x)满足f（x）=f(x+2).当x属于【3,5】,f(x)=2—|x-4|

f [ sin(π/6) ]= f (1/2)= f (0.5+2)= f (2.5+2) =f(4.5)=2-0.5=1.5 f [ cos (π/6) ]= f [ (根号3）/2] = f [ 4+（根号3）/2 ]=2-（根号3）/2 A错误 f(sin1)=f(4+ sin1)=2-sin1 f(cos1)=f(4+ cos1)=2-cos 1 1弧度=...