Which equation should be used to graph y=sec^(-1) (x) on a calculator? y = (1)/(sec(x)) \\y=(1)/(cos^(-1) (x)) \\y=sec((1)/(x) )\\y=cos^(-1) ((1)/(x) )

Question

Which equation should be used to graph
`y=sec^(-1) (x)` on a calculator?


`y = (1)/(sec(x)) \\y=(1)/(cos^(-1) (x)) \\y=sec((1)/(x) )\\y=cos^(-1) ((1)/(x) )`

Answer 1

9514 1404 393

Answer:

(d) y = arccos(1/x)

Explanation:

You are given y = arcsec(x), which means sec(y) = x = 1/cos(y). Then ...

cos(y) = 1/x

y = arccos(1/x) . . . . . matches choice D