Solved

Use a Calculator to Evaluate the Function $\cos \left( \frac { \pi } { 9 } \right)$

Question 157

Multiple Choice

Use a calculator to evaluate the function. Round your answer to 4 decimal places.
- $\cos \left( \frac { \pi } { 9 } \right)$

A) $0.9999$
B) $0.3420$
C) $0.4083$
D) $0.9397$

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