Câu 1:
a: \(\frac{\pi}{9}\left(rad\right)=\left(180^0\cdot\frac19\right)=20^0\)
=>Đúng
b: \(\frac54\pi\left(rad\right)=\frac54\cdot180^0=225^0\)
=>Đúng
c: \(\frac35\pi\left(rad\right)=\frac35\cdot180^0=108^0<120^0\)
=>Sai
d: \(\frac{7}{12}\pi\left(rad\right)=\frac{7}{12}\cdot180^0=105^0<155^0\)
=>Sai
Câu 2:
a: \(120^0=\left(\frac{120}{180}\pi\right)\left(rad\right)=\frac23\pi\left(rad\right)\)
=>Sai
b: \(250^0=\left(\frac{250}{180}\pi\right)\left(rad\right)=\left(\frac{25}{18}\pi\right)rad\)
=>Đúng
c: \(135^0=\left(\frac{135}{180}\pi\right)\left(rad\right)=\frac34\pi\left(rad\right)\)
=>Đúng
d: \(300^0=\left(\frac{300}{180}\pi\right)\left(rad\right)=\left(\frac53\pi\right)\left(rad\right)\)
=>Đúng
