Answer
$1.4353$
Work Step by Step
Step 1: Ensure that the calculator is in radian.
Step 2: $\sec0.8=\frac{1}{\cos0.8}$
Step 3: Type $\frac{1}{\cos0.8}$ into the calculator and press enter.
Step 4: Rounding out the answer to 4 decimal places,
$\frac{1}{\cos0.8}\approx1.4353$
