HSG-SRT.C.6

Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.

 
29 Lesson(s)
   

Discovering Trig

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

It's trig time! Students will use a hands-on activity to discover ratios in right triangles like sine, cosine and tangent.

 
Favorites (36)
 
Resources (13)
trig day 1 image
   

NPR Car Talk Problem - Day 2 of 2

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Tim  Marley
Troy, MI
Environment: Suburban
 
Big Idea:

This problem from NPR's Car Talk is engaging, challenging, and mathematically rich!

 
Favorites (4)
 
Resources (9)
untitled
   

Final Exam Review Stations (Day 1 of 3)

12th Grade Math » Unit: Review
12th Grade Math » Unit: Review
Tiffany Dawdy
Phoenix, AZ
Environment: Urban
 
Big Idea:

Students review by working through various stations at their own pace and receive immediate feedback on their work.

 
Favorites (5)
 
Resources (23)
 
Reflections (1)
review stations 1
   

Building a Kicker Ramp

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students are introduced to trigonometry as they use the properties of similar right triangles to evaluate a design for a skateboard ramp.

 
Favorites (19)
 
Resources (26)
kicker ramp 06
   

Introduction to Trigonometry Unit Quiz

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students complete the summative assessment for the unit and take a pre-test for the next unit.

Standards:
 
Favorites (6)
 
Resources (29)
quote einstein
   

30-60-90 and 45-45-90 Fun

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

Special delivery! Students discover ratios of side lengths in special right triangles by constructing squares and equilateral triangles.

 
Favorites (11)
 
Resources (18)
30 60 90 image
   

Introduction to Trigonometry

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

Students learn about right triangle trigonometry by creating similar triangles and producing their own trig tables.

 
Favorites (19)
 
Resources (22)
 
Reflections (2)
trigvaluesimag resizede
   

Properties of Sine and Cosine

Geometry » Unit: Introduction to Trigonometry
Geometry » Unit: Introduction to Trigonometry
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Exploring the meaning of sine and cosine as ratios and as relationships. Trigonometry is just similar triangles—but better!

 
Favorites (5)
 
Resources (22)
propertiesofsineandcosine studentwork
   

Trig Time

Geometry » Unit: Trig Trickery
Geometry » Unit: Trig Trickery
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

Aiming for perfection with practice, what's your sine? Cosine and tangent too!

 
Favorites (9)
 
Resources (13)
trig image
   

Riding a Ferris Wheel - Day 2 of 2

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Tim  Marley
Troy, MI
Environment: Suburban
 
Big Idea:

Make the transition from the Ferris wheel problem to the unit circle.

 
Favorites (3)
 
Resources (10)
 
Reflections (1)
untitled
   

Trigonometric Functions: Unit Assessment

12th Grade Math » Unit: Trigonometric Functions
12th Grade Math » Unit: Trigonometric Functions
Tim  Marley
Troy, MI
Environment: Suburban
   

Intro to Trigonometry / What is Similarity?

12th Grade Math » Unit: Trigonometry: Triangles
12th Grade Math » Unit: Trigonometry: Triangles
James Dunseith
Worcester, MA
Environment: Urban
 
Big Idea:

It all starts with vocabulary! The study of words and how precisely we can use them is one of the key structures introduced as this course begins.

 
Favorites (2)
 
Resources (25)
 
Reflections (1)
tu1 l1 image
   

Finding Angle Measurements Using Trig

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

Students put their knowledge of trig to work solving problems and proving hypotheses involving angles.

 
Favorites (9)
 
Resources (17)
 
Reflections (1)
trig cartoon resized
   

Finishing Up the Similar Triangles Project

12th Grade Math » Unit: Trigonometry: Triangles
12th Grade Math » Unit: Trigonometry: Triangles
James Dunseith
Worcester, MA
Environment: Urban
 
Big Idea:

It's time for students to synthesize what they've learned about the trigonometric ratios, precision, similarity, and patterns. Today's work period gives students a chance to clarify their thinking and to put it in writing.

 
Resources (14)
brainiacs li resized1
   

More on Finding Lengths of Segments

Geometry » Unit: Right Triangle Trigonometry
Geometry » Unit: Right Triangle Trigonometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

Students continue to apply trig functions, while also learning about the relationship between the sine and cosine of complementary angles.

 
Favorites (8)
 
Resources (16)
more on finding side lenghts lesson image
Common Core Math
 
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