Q. 67 - Precalculus Enhanced with Graphing Utilities

Question

Use a calculator to find the approximate value of each expression rounded to two decimal places.

$\sec 21°$

Step-by-Step Solution

Answer

The approximate value of the given expression is 1.07.

Step 1. Given information.

The given expression is:

$\sec 21°$

Step 2. Determine the approximate value.

First, set the MODE to receive degrees in the calculator, then find the value rounded to two decimal places.

$\begin{array}{rcl}\sec 21°& =& 1.07114...\\ & \approx & 1.07\end{array}$

Step 3. Conclusion.

The approximate value of the given expression is 1.07.