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Use a Calculator to Find the Approximate Value of the Expression

Question 166

Multiple Choice

Use a calculator to find the approximate value of the expression rounded to two decimal places.
- cos⁡3π7\cos \frac { 3 \pi } { 7 }


A) 0.22
B) 1.05
C) 1.00
D) 0.27

Correct Answer:

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