   Chapter 11.3, Problem 28E Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

In Exercises 27 to 32, use a calculator and reciprocal relationships to find each ratio correct to four decimal places.sec 15 ∘

To determine

To find:

The value of sec15 correct to four decimal places using the calculator and reciprocal relationships.

Explanation

Given:

The trigonometric ratio sec15.

Definition used:

The reciprocal of secα is cosα. That is, secα=1cosα.

Calculation:

Here α=15.

sec15=1cos15

Let us use Ti-83 calculator to find the value of 1cos15.

Press ON in Ti-83 calculator.

Since we need to find the value of degree, we need to change the mode to degrees.

Press MODE button and use arrow keys to select the “Degree” mode

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