Mathematics for JEE Main and Advanced
Complex Numbers
Complex numbers drawn on the Argand plane: modulus, argument, rotation and locus, one idea per lesson.
Lesson 1
Modulus and Argument of a Complex Number
A complex number is a point, and also an arrow from the origin. Its modulus is how long the arrow is. Its argument is which way the arrow points.
Free PDF, 5 pages: the idea, a solved example, practice questions with answers.
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