정답
$s = r \cdot \theta$, where $r$ is the radius and $\theta$ is measured in radians.
해설
If angle is given in degrees, convert via $\theta_{\text{rad}} = \theta_{\text{deg}} \times \frac{\pi}{180^\circ}$. Sector area is $A = \frac{1}{2}r^2\theta$.
홈 / 라이브러리 / Digital SAT: Comprehensive Practice (Math & Reading-Writing) / AI 플래시카드
What is the arc length formula $s$ for a central angle $\theta$ in radians?
덱 'Digital SAT: Comprehensive Practice (Math & Reading-Writing)'의 플래시카드.