Use Reference Angles to Find the Exact Value of the Expression

question 29

Multiple Choice

Use reference angles to find the exact value of the expression. Do not use a calculator.
- $\cot \frac { - 5 \pi } { 6 }$

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

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Definitions:

360-Day Year

An accounting practice that simplifies interest calculations by assuming a year has 360 days.

Dealer Charged

The price or fee a dealer applies to a product or service, usually including their markup over the wholesale or dealer price.

Exact Simple Interest

A calculation method where interest is determined using the actual number of days in a loan period over a 360 or 365-day year, depending on the terms.

365-Day Year

The 365-Day Year is a time measurement convention considering a year to have exactly 365 days, ignoring leap years.