4MA1/2HR Jan 2022, Question 12: Angles of Elevation and Depression
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2HR (Higher) · Calculator · 3 marks
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The question, in short
Using two vertical masts AB = 6.2 m and CD = 30.7 m standing on level ground with AC = 244 m, calculate the angle of depression from D down to B, rounded to one decimal place.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 130.7 − 6.2 = 24.5
- 2tan x = 24.5 / 244
- 3x = tan⁻¹(24.5 / 244)
- 4x = 5.7
Answer5.7
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