If an angle measures and radians

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

Problem

2. If an angle measures

d^{\circ}

and

r

radians, which of the following relations between

d

and

r

is always true? (a)

\frac{d}{r}=\frac{\pi}{180}

(b)

\frac{d}{r}=\frac{180}{\pi}

(c)

\frac{d}{r}=2\pi

(d)

\frac{d}{r}=\frac{360}{\pi}