Evaluate the Expression $\cot \left( - 90 ^ { \circ } \right)$

question 98

Multiple Choice

Evaluate the expression.
- $\cot \left( - 90 ^ { \circ } \right)$

• A) \(- 1\)
• B) \(\frac { \sqrt { 2 } } { 2 }\)
• C) Undefined
• D) 0

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