WACE ATAR Mathematics Specialist Practice Questions - WACE Year 12 ATAR Mathematics Specialist (Western Australia) Exam

Given z1 = 3 cis(pi/4) and z2 = 2 cis(pi/3), what is the product z1 * z2 in polar form?

6 cis(pi/12) 6 cis(7pi/12) 5 cis(7pi/12) 6 cis(pi/7)

Correct Answer:

6 cis(7pi/12)

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