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Angelina_Jolie [31]
2 years ago
11

Let $P$ be the set of $42^{\text{nd}}$ roots of unity, and let $Q$ be the set of $70^{\text{th}}$ roots of unity. How many eleme

nts do $P$ and $Q$ have in common
Mathematics
1 answer:
klio [65]2 years ago
8 0

Answer:

The answer to the given question can be defined as follows:

Step-by-step explanation:

\to GCF(42, 70) = 7

Therefore, the common roots of unity were  

\to e^{\pm i 2\pi \frac{k}{7}}\\\\\ where \\ \\ k=0,1,...... 6

That's why the  answer is 14 for these

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