0580/11 May/Jun 2023, Question 21: Angles in a Triangle
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 3 marks
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The question, in short
A right-angled triangle has angles 4x° and (3x − 1)°. Form an equation from the angle facts and solve it to find x.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 14x + 3x − 1 + 90 = 180
- 27x + 89 = 180
- 37x = 91
- 4x = 13
Answer13
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Also searched as: 0580/11/M/J/23 · 0580_s23_qp_11 · 0580 s23 11 · question 21.
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