Doar primele 2-3 de la fiecare subpunct. Cu explicațiile de rigoare.
Urgent

A)8 π=1440°
27π=4860°
-36π= -6480°
-49π= -8820°
25π/4=1125°
7π/3=420°
-3π/2= -270°
-25π/6= -750°
2009π/4=90405°
B)720°=4 π
1890°=21π/2
1440°=8π
-270°= -3π/2
-630°= -7π/2
-750°= -25π/6
405°=9π/4
420°=7π/3