Find the Cotangent (If It Exists) of the Real Number $t = \frac { 5 \pi } { 4 }$

question 21

Multiple Choice

Find the cotangent (if it exists) of the real number $t = \frac { 5 \pi } { 4 }$ .

• A) \(- \frac { \sqrt { 2 } } { 2 }\)
• B) 1
• C) \(- 1\)
• D) 0
• E) \(\cot \left( \frac { 5 \pi } { 4 } \right)\) does not exist

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