   Chapter 11.3, Problem 28E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
1 views

# 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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