題目是咁的 :

From a point B due south of a tower TA with height 48 m, Andy observes that the angle of elevation of the top T is 26°. Then he walks in a direction of N50°E to a point C. The bearing of C from A is S75°E and A, B and C are three points on the horizontal ground.

(a) Draw a diagram to represent the situation.
(b) Find the distance between B and C.
(c) Find the angle of elevation of T from C.



Related Topics: Bearing , Sine/Cosine Law , Heron's formula
我唔知 part c 應該點計
part b 答案係 116 m
thx

係 C 度畫個十字方位 , 南邊果度extent 到cut 左上面條North