(1)由sin2θ=cosθ,cosθ=根号3*sinθ得sinθ=1/2,2sin(θ-π/6)=0,故θ=2kπ+π/6,k∈Z
(2)由sin2θ=cosθ,cosθ+根号3*sinθ=0得sinθ=1/2,2sin(θ+π/6)=0,故θ=2kπ+5π/6,k∈Z
(1)由sin2θ=cosθ,cosθ=根号3*sinθ得sinθ=1/2,2sin(θ-π/6)=0,故θ=2kπ+π/6,k∈Z
(2)由sin2θ=cosθ,cosθ+根号3*sinθ=0得sinθ=1/2,2sin(θ+π/6)=0,故θ=2kπ+5π/6,k∈Z