Sec 3/4 E Math T07-Q09 - A three-dimensional trigonometry problem

Sec 3/4 E Math T07-Q09 - A three-dimensional trigonometry problem

Secondary 3
Original parallel to Sec3&4 E Math FA

A vertical flagpole of height \(15\) m stands at one corner of a rectangular field measuring \(50\) m by \(21\) m.

  1. Calculate the diagonal length of the field.
  2. Calculate the angle of elevation of the top of the flagpole from the opposite corner, giving your answer correct to 1 decimal place.

Solution:

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Answer:(a) \(54.231\) m; (b) \(15.5^\circ\).

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