Question 2

Example 4.21. Two boats P and Q, are sitting in the water such that they subtend an angle of 60° from a point C at the

base of a cliff. The angle of elevation from P and Q to the top of the cliff, 10 metres above C are 20° and 30° respectively.

a) Find the distance between:

i) C and P.

ii) C and Q.

b) Deduce the distance between the two boats correct to the nearest metre.