2sinx+√3cosx+a=0
2sin(x+π/3)=-a
sin(x+π/3)=-a/2
x+π/3=2kπ+arcsin(-a)或x+π/3=2kπ+π-arcsin(-a/2)
α=2kπ-arcsina/2-π/3 β=2kπ+π+arcsina/2-π/3
α+β=4kπ+π/3
∵α+β∈(0,π)
∴α+β=π/3
不知道对不对哦
2sinx+√3cosx+a=0
2sin(x+π/3)=-a
sin(x+π/3)=-a/2
x+π/3=2kπ+arcsin(-a)或x+π/3=2kπ+π-arcsin(-a/2)
α=2kπ-arcsina/2-π/3 β=2kπ+π+arcsina/2-π/3
α+β=4kπ+π/3
∵α+β∈(0,π)
∴α+β=π/3
不知道对不对哦