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Activity Overview

Students use the calculator to solve trigonometry problems using sine, cosine, and tangent. They also find inverses of trigonometric functions.

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Before the Activity

Set the angle mode of the calculator to degrees
See the attached PDF file for detailed instructions for this activity
Print pages 87 - 90 from the attached PDF file for your class
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During the Activity

Distribute the pages to the class.

Follow the activity procedures:

Understand the relationship between the sides and angles of a right triangle
Calculate the length of a side of a right triangle, given the angles and length of at least one side
Use the calculator to find the decimal form of the sine of an angle given in degree-minute-second form
Understand how to calculate the angle of depression by identifying a trigonometric ratio, and using the corresponding equation
Use the formulas of the trigonometric ratios to solve problems
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After the Activity

Students complete the Student Activity pages.

Review student results
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary