Calculate the angle in radians of
(i) `1^(@)` (degree)
(ii) `1` (minute of arc or arc minute) and
(iii) `1` (second of arc or arc sec)
in radian.(Use `360^(@)=2pi rad`,`1^(@) = 60^(@)` and `1^(')=60^(@)` and `1^(')=60^(''))`

Explanation

(a) We have `360^(@) = 2 pi rad`
`1^(@)= ((pi)/(180))rad= 1.745 xx 10^(-2)rad`
b) `1^(@)= 60= 1.745 xx 10^(-2)rad`
`1.= 2.908xx 10^(-4) rad = 2.91x10^(-4) rad`
c) `l.=60" = 2.908 xx 10^(-4) rad`
`1" = 4.847 xx10^(-4)rad = 4.85 xx10^(-4)rad`