ANGLES Expressions (Page 2 of 2)

When calculating arc length, if the angle is given in degree measure it must be converted to radians. This can be done by changing to Radian mode, then entering the angle within the expression by using the degree symbol. For example, let's find the length of the arc intercepted by a central angle of measure 72.5° in a circle of radius 2.65 meters.

 MODE key. [Radian] ENTER key.

 CLEAR key.
 2.65 Multiply key. 72.5 2nd ANGLE key. 1: menu selection. ENTER key.

 Calculator screen image. Calculator screen image.

The arc length is approximately 3.35 meters.
Copyright © 2010 Turner Educational Publishing
Go back to the previous page. Go to the next page. Go to the Table of Contents. Go to the Index page. Go to the Quiz page. Exit to the Home page.