IB Math HL Trigonometry Test 6 2018 P2 Q3

IB Math HL Trigonometry Test 6 2018 P2 Q3

IB Year 6 | Grade 12
6 marks

A vertical flagpole \(AD\) stands on horizontal ground. The elevations of \(D\) from \(B\) and \(C\) are \(40^\circ\) and \(35^\circ\), respectively. Also \(BC=50\text{ m}\) and \(\angle BDC=20^\circ\).

Find the height of the flagpole.[6]

Solution:

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Answer:\(83.1\text{ m}\) (3 s.f.).

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