Question 1

Paper 2Easy7 marks

A survey team is preparing a map of a coastal reserve. In one triangulation, stations AA and BB are 138 m138\text{ m} apart. The measured angles in triangle ABPABP are ∠BAP=52∘\angle BAP=52^\circ and ∠ABP=67∘\angle ABP=67^\circ

A second mapped zone is represented by triangle XYZXYZ where XY=84 mXY=84\text{ m} XZ=117 mXZ=117\text{ m} and ∠YXZ=42∘\angle YXZ=42^\circ

(a)

Determine ∠APB\angle APB

[2]
(b)

Show that AP=145 mAP=145\text{ m} correct to three significant figures.

[3]
(c)

Determine the area of triangle XYZXYZ correct to three significant figures.

[2]

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