Find the exact value of \cos\frac{5\pi}{3}

Paligutanhk 2021-12-15 Answered
Find the exact value of cos5π3
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peterpan7117i
Answered 2021-12-16 Author has 39 answers
This angle cos5π3 is in the 4th quadrant, where cos ratio has a positive value.
Related acute angle is (2π5π3)=π3
Thus, cos5π3=cosπ3
Now, use the Exact value triangle for this angle:
cos5π3=cosπ3=12

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godsrvnt0706
Answered 2021-12-17 Author has 31 answers
Answer:
cos5π3=12

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