What is another form of sec^-1(x) or arcsec(x)?

Question

What is another form of sec^-1(x) or arcsec(x)?

Answer 1

y=arcsec(x)

sec(y)=x

Answer 2

Suppose @ be any angle in [0, pi] and let sec@ = x.

Then,

         cos@ = 1/x

=>     arccos(1/x) = @

But @ is also equal to arcsecx.

Therefore, arcsecx = arccos(1/x).

This is another form of arcsecx.

Answer 3

It is arccos(1/x) Obviouslty x is not zero.

Answer 4

sec(x) = 1/cos(x)

sec^-1(x)=cos(x)