Question

evaluate: arcsec2

Answer 1

Use your scientific calculator.

Press
2
If it does not have a
\[\sec ^{-1}\] button then press
\[\cos^{-1}\]
followed by
\[1/x\]

Answer 2

thank you :)

Answer 3

Just make sure that the number is within arcsec's domain if your calculator does not have a sec-1 button as cos and secant have different domains..