Question

Prove that 1radian equal to 57.3degree

Answer 1

A semicircle is half of one circle.

$\large\rm { \frac{1}{2} \times 360^{\circ} = 180^{\circ}}$

$\large\rm { \pi \times \ rad = 180^{\circ}}$

$\large\rm { 3.1415 \times 57.3^{\circ} \approx 180}$

So, hence proven.

Note:- here, $\large\rm { “ \approx ”}$ denotes approx value.