of the plariet tupláfdel CalExample 2.1 Calculate the angle of(a) 1°

1.	of the plariet tupláfdel CalExample 2.1 Calculate the angle of(a) 1° (degree) (b) I' (minute of are or aremin)and (c) 1"(second of arc or are second) inradians. Use 360°-2n rad, 1°-60' andl' 60"
Answer» 360° = 2π rad 1° = 2π/360radso, 10° = 10× 2π/360 rad =π/18 rad 1' ( it means minute )60 minutes (60') = 1°1 minute = 1/60°but 1° =π/180 radso, 1/60° =π/60×180 =π/10800 rad 1'' = ? rad60'' = 1 minuteand 60' = 1° so, 3600'' = 1°so, 1'' =π/180×3600 =π/648000 rad

of the plariet tupláfdel CalExample 2.1 Calculate the angle of(a) 1° (degree) (b) I' (minute of are or aremin)and (c) 1"(second of arc or are second) inradians. Use 360°-2n rad, 1°-60' andl' 60"

Answer»

360° = 2π rad 1° = 2π/360radso, 10° = 10× 2π/360 rad =π/18 rad

1' ( it means minute )60 minutes (60') = 1°1 minute = 1/60°but 1° =π/180 radso, 1/60° =π/60×180 =π/10800 rad

1'' = ? rad60'' = 1 minuteand 60' = 1° so, 3600'' = 1°so, 1'' =π/180×3600 =π/648000 rad