4400 Higher June 2008 Paper 4 Q22

EdexcelHigherOld spec4 marksAdvanced Trigonometry

Diagram NOT accurately drawn

The area of the triangle is 12 cm².
The angle \(x^\circ\) is obtuse.
Calculate the value of \(x\).

(4)

Scheme	Marks
\(\frac{1}{2} \times 6 \times 8 \times \sin x^\circ = 12\)	M1
\(\sin x^\circ = 0.5\)	M1
30	A1
\(x = 150\)	A1
	(4)
	(4 marks)