0580/21 May/Jun 2026, Question 18: Special Angles and Exact Ratios
Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Non-calculator · 2 marks
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The question, in short
Calculate the value of y given y = sin 60° × tan 30°, using exact trigonometric values.
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Solution · 2 marks
- 1sin 60° = √3/2
- 2tan 30° = 1/√3
- 3y = √3/2 × 1/√3 = 1/2
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