Question : trigonometry equation

Hi

How do you solve -cos(x) = sin(x)? I can tell by looking at the unit circle what the answer should be but I don't know how to actually work it out

thanks

Answer : trigonometry equation

Private Sub Team_Leader_AfterUpdate()
SDL = Switch(Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl", Team_Leader = "Jo", "Rh", Team_Leader = "Kl", "La", Team_Leader = "Ae", "Be", _
    Team_Leader = "Vn", "Nl")




End Sub