Complex Numbers And Quadratic Equations question 299
Question: The value of $ \sec h(i\pi ) $ is [RPET 1999]
Options:
A) - 1
B) i
C) 0
D) 1
Show Answer
Answer:
Correct Answer: A
Solution:
$ \sec h(i\pi ) $ $ =\sec (i^{2}\pi ) $ $ =\sec (-\pi ) $ $ =\sec \pi =-1 $ .