Activity Detail
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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

    		Other Downloads




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    Subject Area:
    Math : Geometry : Triangles
    Math : Precalculus / Trig : Trigonometric Functions

    Author:
    Texas Instruments

    Level:
    9-12

    Activity Time:
    60 Minutes

    Device:
    TI-30X IIB, TI-30X IIS, TI-34 II Explorer Plus™

    Apps:
     

    Software:
     

    Accessories:
     

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



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