Exercise 1.2 Part(1) |Class 10 Math| Federal Board | New book 2025 |

Given:
z₁ = 1 - 2i
z₂ = 2 + i

We are asked to find: |z₁ / z₂|

Step 1: Use the property of moduli:
|z₁ / z₂| = |z₁| / |z₂|

Step 2: Find the modulus of each complex number
|z₁| = √(1² + (-2)²) = √(1 + 4) = √5
|z₂| = √(2² + 1²) = √(4 + 1) = √5

Step 3: Divide the moduli
|z₁ / z₂| = √5 / √5 = 1

Final Answer: 1
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Class 10 Federal board new book(National book foundation).Complex numbers Exercise 1.2. All concepts for federal board examination.Tips and tricks to solve questions easily.New book for academic session 2025-2026.According to SLO's based examination.

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