Two angles to a vertical height

Two angles to a vertical height

Secondary 2
3 marks
TGM Original Questions

Core stretch

Points \(B,C,D\) are collinear, \(AB\perp BD\), \(\angle ACB=55^\circ\), \(\angle ADB=28^\circ\), and \(CD=80\) cm. Calculate \(AD\). [3]

Give non-exact lengths and areas to 3 significant figures, and angles to 1 decimal place.

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Answer:\(144\) cm (3 s.f.).

Need help? Join our E-Maths tuition for O-Level success.

Learn more