},\nonumber\\  \theta_B^{(0)} &= 00^{\circ}+\theta_B^{(0)},     \quad \theta_C^{(0)} = 00^{\circ}+\theta_C^{(0)},\nonumber\\  \theta_B^{(0)} &= 00^{\circ}+\theta_B^{(0)},     \quad \theta_C^{(0)} = 00^{\circ}+\theta_C^{(0)}