To find the value of s for which: sec(s) = 1.0806.
Since sec(s) = 1/cos(s): sec(s) = 1.0806. ---> 1/cos(s) = 1.0806
Multiply both sides by cos(s) 1 = 1.0806 x cos(s)
Divide both sides by 1.0806 1/1.0806 = cos(s)
Simplifying cos(s) = 0.9254
Now, use your calculator to find the inverse cos of 0.9254.
[Inverse cos is arc cos is 2nd cos]