A:氢氧化钠溶液
B:碳酸钾溶液
C:氯化钾溶液
D:氯化钡溶液
I can't play with Alan, I have a lot of things to do.
若函数f(x)=sin(3x+φ),满足f(a+x)=f(a-x),则f(a+π6)的值为( )