Sec-1 4

the negative one is in a like a exponent form
you also have to round the answer to two decimal points

  1.32

Step-by-step explanation:

Consider ...

  x = sec⁻¹(4) . . . . . the inverse secant function of 4, also written arcsec(4)*

Taking the secant of both sides, we have ...

  sec(x) = 4

Writing this in terms of more familiar functions, it is ...

  1/cos(x) = 4

  cos(x) = 1/4

Now, we can use a calculator to find the inverse function. Be sure the calculator is in the appropriate angle mode. We suspect the desired result is in radians.

  x = cos⁻¹(1/4) ≈ 1.318116

  sec⁻¹(4) ≈ 1.32 . . . . . radians

* One way to read this is "the angle whose secant is 4." This helps remind you that the result is an angle, so can be in degrees or radians (or any of several other angle measures).

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

you'll just earn points here

step-by-step explanation: