Use Periodic Properties of the Trigonometric Functions to Find the Exact

question 149

Multiple Choice

Use periodic properties of the trigonometric functions to find the exact value of the expression.
- $\tan \frac { 21 \pi } { 4 }$

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

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