Which of the following correctly gives the relation between arc length

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

s

, radius

r

and angular displacement

\theta

(in radians) for a circle? (a)

\theta = \dfrac{r}{s}

(b)

s = \dfrac{r}{\theta}

(c)

s = r\,\theta

(d)

s = \dfrac{\pi}{180}\,r\,\theta