   Chapter 11.CT, Problem 6CT 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

Without the calculator, determine which number is larger:a) tan 250 or tan 260b) cos 470 or cos 480

To determine

a.

To find:

The larger number of tan 250 or tan 260 without using a calculator.

Explanation

Procedure used:

In a right triangle, the tangent ratio for an acute angle is the ratio opposite sideadjacent side.

Given:

The ratio tan 250 or tan 260.

Calculation:

The value of tangent ratio opposite sideadjacent side of an angle grows immeasurably large as the angle approaches to 900

To determine

b.

To find:

The larger number of cos 470 or cos 480 without using a calculator.

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