I need help with these questions

1. Show that if arcsin x = -0.5 then the measure of the reference angel for x is 30 degrees. 2. Is arctan 1 = 220 degrees a true statement? Justify your answer.In3-8 360" 3.2 cos 8 -1=0 4. Stand + V3=0 5.4 sing - 1 = 2 sin8 + 1 6.S/cos8+ 1) =3 7.3(tan 8 - 2) = 21and- 1 8, seed + V/2 = 2V/2