Question

Radian measure of $25^{\circ}$ is

• A. $\left(\frac{3 \pi}{36}\right)^c$
• B. $\left(\frac{5 \pi}{36}\right)^c$
• C. $\left(\frac{8 \pi}{35}\right)^c$
• D. None of these

Answer 1

Answer: (B)

$\because 180^{\circ}=\pi^c \Rightarrow 1^{\circ}=\left(\frac{\pi}{180}\right)^c$
$\Rightarrow 25^{\circ}=\left(\frac{\pi}{180} \times 25\right)^c=\left(\frac{5 \pi}{36}\right)^c$