Use an Identity to Write the Expression as a Single $\cos \frac { 5 \pi } { 12 }$

question 79

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $\cos \frac { 5 \pi } { 12 }$

• A) \(- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)
• B) \(\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)
• C) \(- \frac { 1 } { 2 } \sqrt { 2 + \sqrt { 3 } }\)
• D) \(\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 3 } }\)

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Definitions:

Normal Distribution

A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Standard Deviation

A quantification of the scope of dispersion or difference among a set of numerical values.

Tips

Voluntary payments given for services rendered, often in the hospitality industry, or advice and suggestions offered to help or inform.

Skewed Distribution

A representation of data that is not symmetric and where one tail of the distribution is longer or fatter than the other.