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secondary 4 | E Maths
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Xin Yi
Xin Yi

secondary 4 chevron_right E Maths

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Date Posted: 6 years ago
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Di Xian
Di Xian's answer
13 answers (Tutor Details)
1st
The three keys here are:

1) understanding what is angle of depression (angle between the horizontal and the line to the object below)

2) Visualizing the triangles formed by the horizontal, vertical (cliff in this case), and the straight line to the object

3) Using the tangent operation