已知设函数f(x)=sin(x+π/3)+2根号3sin^2 x/2⑴求f(x)的最大值及此时的x

问题描述:

已知设函数f(x)=sin(x+π/3)+2根号3sin^2 x/2⑴求f(x)的最大值及此时的x
⑵△ABC的内角A,B,C的对边长分别为a,b,c若f(B)=√3 b=√6/2,c=1.求a的值

f(x)=1/2sinx+√3/2cosx+√3(1-cosx)=1/2sinx-√3/2cosx+√3=sin(x-π/3)+√3当sin(x-π/3)=1时 fmax=1+√3此时 x-π/3=2kπ+π/2 x=2kπ+5π/6 k∈Z f(B)=√3f(B)=sin(B-π/3)+√3sin(B-π/3)=0 B=π/3b=√6/2,c=1...