0580/13 May/Jun 2024, Question 17: Choosing the Right Trigonometric Ratio
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Calculator · 2 marks
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The question, in short
Using a right-angled triangle ABC with right angle at A, CB = 8 cm and angle ABC = 37°, calculate the length AB.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1cos 37° = AB/8
- 2AB = 8 × cos 37° = 6.389… ≈ 6.39 cm
Answer6.39 or 6.389...
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