Question

What is the radican measure of the central angle of an arc that has an arc length of 3 units and a radius of 4 units

Answer 1

`\bf \textit{arc's length}\\\\ s=r\theta ~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad radians\\[-0.5em] \hrulefill\\ r=4\\ s = 3 \end{cases}\implies 3=4\theta \implies \cfrac{3}{4}=\theta \implies 0.75=\theta`