2026 DSS P1 Q24

2026 DSS P1 Q24

Secondary 4
5 marks

In the diagram, \(AE=8.5\) cm, \(DE=7.5\) cm and angle \(ABC=90^\circ\). \(AEB\) and \(ADC\) are straight lines. Triangle \(ABC\) is similar to triangle \(ADE\).

  1. Show that \(AD=4\) cm.[2]
  2. Find the exact value of \(\sin\angle AED+\cos\angle BED\).[3]

Solution:

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Answer:(a) 4 cm. (b) \(-7/17\).

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