Question

Convert the angles in radians
i. ${120}^{\circ }$
ii. ${270}^{\circ }$

• A. $\frac{2\pi }{3},\frac{3\pi }{2}$
• B. $\frac{\pi }{12},\frac{2\pi }{3}$
• C. $\frac{\pi }{6},\frac{\pi }{3}$
• D. $\frac{\pi }{3},\frac{\pi }{6}$

Answer 1

The correct option is A $\frac{2\pi }{3},\frac{3\pi }{2}$

${120}^{\circ }=120\times \frac{\pi }{180}=\frac{2\pi }{3}rad$

${270}^{\circ }=270\times \frac{\pi }{180}=\frac{3\pi }{2}rad$