7 A lighting engineer is setting up part of a display inside a large building. The diagram shows a plan view of the area in which he is working.
He has two lights, which project narrow beams of light.
One is set up at a point 3 metres above the point \(A\) and the beam from this light hits the wall 23 metres above the point \(D\).
The other is set up 1 metre above the point \(B\) and the beam from this light hits the wall 29 metres above the point \(C\).
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7
- By creating a suitable model, show that the beams of light intersect.
7
- Find the angle between the two beams of light.
[0pt]
[3 marks]
7 - State one way in which the model you created in part (a) could be refined.
[0pt]
[1 mark]