Calculate the angle of (a) `1^(@)` (degree) (b) 1' (minute of arc of are min) and (c ) 1''(secondof arc of arc sec) in radian. Use `360^@ =2 pi rad., 1^@ = 60'` and 1' = 60''.

Explanation

(a) We have `360^(@)=2pi rad`
`1^(@)=(pi//180) rad = 1.745xx10^(-2) rad`
(b) `1^(@)=60'=1.745xx10^(-2) rad`
`1'=2.908xx10^(-4) rad cong 2.91xx10^(-4) rad`
(c) `1'=60''=2.908xx10^(-4) rad`
`1''=4.847xx10^(-4) rad cong 4.85xx10^(-6) rad`