Answer :
[tex]y=arc\sec x\iff x=\sec y\\\\y=arc\sec1\iff1=\sec y\\\\\to\dfrac{1}{\cos y}=1\to\cos y=1\to y=2k\pi;\ k\in\mathbb{Z}[/tex]
Answer: C) 0
Answer: C) 0
Answer:
C) 0
Step-by-step explanation:
Arcsec (1)= cos1
Then look at unit circle cos=1 at 0 or 2pi