We know that π = 180°, therefore:
1.
[tex]2\pi=2(180)=360[/tex]
Answer: correct
2.
[tex]\frac{5\pi}{6}=\frac{5(180)}{6}=\frac{900}{6}=150[/tex]
Answer: no correct
3.
[tex]\frac{\pi}{6}=\frac{180}{6}=30[/tex]
Answer: no correct
4.
[tex]\frac{5\pi}{4}=\frac{5(180)}{4}=\frac{900}{4}=225[/tex]
Answer: correct
5.
[tex]\frac{4\pi}{3}=\frac{4(180)}{3}=\frac{720}{3}=240[/tex]
Answer: correct
