Description
Students studied vectors as directed line segments in Grade 8, and in this lesson, vectors are used to represent complex numbers in the coordinate plane. This representation presents a geometric interpretation of addition and subtraction of complex numbers and is needed to make the case in Lesson 15 that when multiplying two complex numbers 𝑧 and 𝑤, the argument of the product is the sum of the arguments: arg(𝑧𝑤) = arg(𝑧) + arg(𝑤).
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From EngageNY.org of the New York State Education Department. Precalculus and Advanced Topics Module 1, Topic A, Lesson 6.
Available from engageny.org/resource/precalculus-and-advanced-topics-module-1-topic-a-lesson-6; accessed 2015-05-29.
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