According to the mariner 's compass , a ship is sailing towards east . If the declination at the place is `20^(@)E` , what is the actual direction of motion of the ship ?

Explanation

Let the ship be at Fig . The points E and E' are on the geographical east and magnetic east of the point A .
according to the problem ,
`angleNAN'=20^(@)`
`therefore" "angleEAE'=20^(@)`
So , the ship is moving towards the point e' . i.e. , along a direction of `20^(@)` south of the geographical east .