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) $0.9397$

Name: 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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Quizplus · Accepted Answer

Using a calculator to evaluate $\cos \left( \frac { \pi } { 9 } \right)$, the result is approximately $0.9397$, rounded to four decimal places.

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