What Are the Correct Components of a 20km Displacement at N30°E?

[bobby_burke]

A boat sails in a straight line 20km [N30°E]. What are the components of its displacement to the north and east?

the answers given are 17 km [N] and 10 km [E], but using the formulae
Ay = A Sin σ and Ax = A Cos σ, I've got the values mixed up... could it be because I've drawn it wrong? I've got it drawn as 30° North of East... Does N30°E mean 30° east of north?

 

[bigbeau]

hey Bobby,

yes, it does mean 30 degrees east of north. therefore your sigma value is 60 deg instead of 30.
that should fix you

Beau