Grades 8-12 
Mathematics 
Geometry 
Standard 19

Students use trigonometric functions to solve for
an unknown side of a right triangle, given an
angle and a side.
 
Resources
Lesson Plans
Assessments

Geometry  
Larson/Boswell/Stiff, 1995,  
D.C. Heath and Company 

Section References 

9.6 Extended Applications: Solving Right Triangles 

Specific Textbook   
Web Sites   

http://www.glencoe.com/  
sec/math/prealg/mathnet/   

http://www.eduplace.com/  
links/   

http://www.eduplace.com/   

http://www.hmco.com/  
college/mathematics/  
index.html   

http://www.mcdougallittell  
.com/   

http://www.hmco.com/   

http://www.SRA-4KIDS.com/   

General Math   
Reference Sites   

http://www.learner.org/  
sami/view-category.php3  
?category=math   

http://www.score.k12.ca.us/   

http://henson.austin.apple  
.com/edres/curric.shtml   

http://school.discovery.com/  
schrockguide/index.html   

http://www.EDsOasis.org/   

http://www.math.com/   

http://www.nea.org/grants/  
free.html   

http://www.wcom.com/  
marcopolo/   

http://www.udel.edu/sine/   

http://dewey.chs.chico.k12  
.ca.us/math.html   

Free Stuff   

http://www.nea.org/  
grants/free.html   

State/National Math   
Ed Organizations   

http://www.nctm.org/   

http://www.cde.ca.gov/   

Calif. Dept. of Ed. Standards, Assessment, Ed. Reference.   

Calculator Reference Site   

http://www.ti.com/  
calc/docs/calchome.html 



Previously Published Data 

1.) Students will identify the parts of a right triangle. 


2.) Students will label the hypotenuse and opposite and adjacent sides of numerous right triangles. 
3.) Students will use trigonometric functions to find the missing sides of several right triangles.
 

Previously Published Data 

1.) Students use trigonometric functions to find missing sides of right triangles. 


2.) Students find the measure of missing angles of a triangle using trigonometric functions.