Computing by Degrees!

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Triangles

Math: Precalculus: Trigonometry (Triangle and Circular Functions)

Level

9-12

Activity Time

60 Minutes

TI Calculator

TI-30 X IIS™ / TI-30Xa

Other Materials

This is Activity 9 from the EXPLORATIONS Book:
Math Investigations with the TI-30X IIS: Activities for Secondary Mathematics

Resource Types

Lessons

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Computing by Degrees!

Activity Overview

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

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

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

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

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Triangles

Math: Precalculus: Trigonometry (Triangle and Circular Functions)

Level

9-12

Activity Time

60 Minutes

TI Calculator

TI-30 X IIS™ / TI-30Xa

Other Materials

This is Activity 9 from the EXPLORATIONS Book:
Math Investigations with the TI-30X IIS: Activities for Secondary Mathematics

Resource Types

Lessons

Report an Issue

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Computing by Degrees!

Computing by Degrees!

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