Question

$\frac{3\pi }{5}$ radians is equal to

• A. ${108}^o$
• B. ${54}^o$
• C. ${100}^o$
• D. ${81}^o$

Answer 1

Answer: (A)

${108}^o$

$\pi$ radians $={180}^o$

$1$ radian $=\frac{{180}^{\circ }}{\pi }$

$\therefore \frac{3\pi }{5}$ radians $=\frac{{180}^{\circ }\times 3\pi }{\pi \times 5}={108}^{\circ }$