Question

The value of $\sec h(i\pi)$ is

• A. ­– 1
• B. I
• C. 0
• D. 1

Answer 1

Answer: (A)

­– 1

Answer 2

$\sec h(i\pi) = \frac{2}{e^{\pi i} + e^{- \pi i}}$ = $\sec\pi = - 1$