Find the Limit of the Sequence $a _ { n } = \cos \left( \frac { n \pi } { 2 } \right)$

question 122

Multiple Choice

Find the limit of the sequence $a _ { n } = \cos \left( \frac { n \pi } { 2 } \right)$ .

• A)0
• B)1
• C) \(\frac { 3 \pi } { 2 }\)
• D) \(- \frac { 3 \pi } { 2 }\)
• E)-1
• F) \(\frac { \pi } { 2 }\)
• G) \(- \frac { \pi } { 2 }\)
• H)Divergent