4MA0 Higher January 2012 Paper 3 Q9

EdexcelHigherOld spec5 marksBasic Trigonometry

9

Triangle PQR with a right angle at Q, PQ = 3.4 cm and PR = 5.8 cm

Diagram NOT accurately drawn

Triangle \(PQR\) has a right angle at \(Q\).
\(PQ\) = 3.4 cm and \(PR\) = 5.8 cm.

(a) Work out the size of angle \(QRP\).
Give your answer correct to 1 decimal place. (3)

The length 5.8 cm, of \(PR\), is correct to 2 significant figures.

(b)
(i) Write down the upper bound of the length of \(PR\).
(ii) Write down the lower bound of the length of \(PR\).
(2)
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