Question

What is the radian value of angle ${60}^o{30}^{\prime }$?

• A. $\frac{{\pi }^c}{3}$
• B. $\frac{121}{360}{\pi }^c$
• C. $\frac{121{\pi }^c}{180}$
• D. $\frac{121}{540}{\pi }^c$

Answer 1

The correct option is B $\frac{121}{360}{\pi }^c$

${\pi }^c={180}^o$
$\Rightarrow {60}^o{30}^{\prime }={60}^o+\frac{1^o}{2}=\frac{{121}^o}{2}={\left(\frac{121}{2}\times \frac{\pi }{180}\right)}^c$
$=\frac{121}{360}{\pi }^c$.