Home Maths Complex Number Skill Builder If , the modulus and argument form of , is
Maths Complex Number Skill Builder Single Correct MCQ
Published on: August 13, 2026

If , the modulus and argument form of , is

A

B

C

D

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The correct answer is:
A

We are asked to write

in modulus-argument form, given .

Step 1: Use trig identity

So:

Step 2: Consider the sign

Since . Factor out :

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