Question

Express $\frac{\pi }{4}$ in to degrees.

Answer 1

Given:$C=\frac{\pi }{4}$

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

$\frac{D}{90}=\frac{2\times \frac{\pi }{4}}{\pi }$

$\frac{D}{90}=\frac{2}{4}=\frac{1}{2}$

$D=\frac{90}{2}$

$\therefore D={45}^{\circ }$