Find the Exact Value Of $\sec \left( - \frac { 5 \pi } { 2 } \right)$

question 57

Multiple Choice

Find the exact value of $\sec \left( - \frac { 5 \pi } { 2 } \right)$ and $\csc \left( - \frac { 7 \pi } { 2 } \right)$

• A) \(\sec \left( - \frac { 5 \pi } { 2 } \right) = 0 , \csc \left( - \frac { 7 \pi } { 2 } \right) = 1\)
• B) \(\sec \left( - \frac { 5 \pi } { 2 } \right) = 0 , \csc \left( - \frac { 7 \pi } { 2 } \right) = - 1\)
• C) \(\sec \left( - \frac { 5 \pi } { 2 } \right) = 1 , \csc \left( - \frac { 7 \pi } { 2 } \right) = \text { undefined }\)
• D) \(\sec \left( - \frac { 5 \pi } { 2 } \right) = \text { undefined, } \csc \left( - \frac { 7 \pi } { 2 } \right) = 1\)
• E) none of these

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