Equation Icon  [ 2 -1--∂𝜃 (sin 𝜃∂𝜃) − a2 (ω2 − μ2δs,0)sin2𝜃 − 2aωs cos 𝜃 − (m-+-s-cos𝜃)-- sin 𝜃 sin2 𝜃 ] +A Ssω,A,m (𝜃) = 0. (158 )