1條math~

圖片參考：http://i282.photobucket.com/albums/kk249/harryC25/MATH.jpg

唔記得畫O sor /.\
NOA=OAC=15*(錯角)
EAC=90*(EAC係直角)
咁BAE=130-90-15=25*
FBA=BAE=25*(錯角)

e..睇錯以為係搵bearing oF A frOm B
當F同A係直線..垂直AE
咁FAB=90-25=65*
咁即係bearing oF B frOm A iS N65*E
the ans is b

answer is B

180 - ( 130 - 15) = 65