Calculate the angle of (a) `1^(@)` (degree) (b) 1' (minute of arc or arcmin) and `("c")` 1" (second of arc or arc second ) in radians. Use `360^(@) = 2pi` rad, `1^(@)=60'` and 1'=60".

Explanation

(a) We have `360^(@)= 2pi` rad
`1^(@) = (pi//180) "rad" = 1.745 xx 10^(-2)` rad
(b) `1^(@) = 60. = 1.745 xx 10^(-2)` rad
`1.= 2.908 xx 10^(-4) " rad" = 2.91 xx 10^(-4)` rad
(c ) 1. = 60. `= 2.908 xx 10^(-4)` rad
`1..= 4.847 xx 10^(-6) " rad" = 4.85 xx 10^(-6)` rad