Evaluate Without Using a Calculator by Using Ratios in a Reference

question 335

Multiple Choice

Evaluate without using a calculator by using ratios in a reference triangle.
- $\tan \left( - \frac { 2 \pi } { 3 } \right)$

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

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