If N Is an Integer, N ∙ 180° Represents an Integer

question 120

Multiple Choice

If n is an integer, n ∙ 180° represents an integer multiple of 180°, and (2n + 1) ∙ 90° represents an odd integer multiple of
90°. Decide whether the expression is equal to 0, 1, -1, or is undefined.
- $\tan \left( ( 2 n + 1 ) \cdot 90 ^ { \circ } \right)$

• A) 1
• B) 0
• C) \(- 1\)
• D) Undefined

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