Question

Express the sexagesimal measure ${15}^{\circ }$ as radian measure

Answer 1

Given:$D=15$

We know that $\frac{D}{90}=\frac{G}{100}=\frac{2C}{\pi }$

$\Rightarrow \frac{D}{90}=\frac{2C}{\pi }$

$\Rightarrow \frac{15}{90}=\frac{2C}{\pi }$

$\Rightarrow \frac{1}{6}=\frac{2C}{\pi }$

$\Rightarrow C=\frac{\pi }{12}$