Paper 1 · Complex Numbers
⏱ Tested in 3 exam questions since 2022
Lesson 4 of 17
Complex Numbers 4 – Argand Plane and Modulus
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- Plot complex numbers as points (a, b) on the Argand diagram
- Find the modulus with |z| = √(a² + b²) — a formula you must learn, it's not in the tables
- Link the modulus to the distance formula: it's the distance from the origin
- Simplify modulus answers into surd form, e.g. √20 = 2√5
Most recent exam questions
- 2024 P1 Q2(c)(i)
- 2023 P1 Q4(c)(ii)
- 2022 P1 Q3(a)(ii)
- 2022 P1 Q3(a)(iii)
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