Помогите пожалуйста, очень срочно!!

1) arcsin1-arccos(-1)+arctg(-[tex] \sqrt{3} /3[/tex])
2) arcsin(-[tex] \sqrt{2} /2[/tex])+arctg(-1)
3) arcsin(-[tex] \sqrt{3} /2[/tex])+arctg(-1)
4) arcsin(-1/2)+arccos(-1/2)+arctg0
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