Question

show that (i ) 1 radian =57.53° (ii) S=r∅​

Answer 1

Explanation:

$1 \: radian \: = \: \frac{180}{\pi} = \frac{180 }{3.14} = 57.53 \: degrees \: . \\ \\ (\pi = 3.14....) \\ \\ ii) \: \: \: s = r \alpha \: is \: true \: for \: small \: values \: of \: \alpha \: .$