HSF-TF.C.9
Scroll Up
- HSF-TF.C.8Prove the Pythagorean identity sin^{2}(θ) + cos^{2}(θ) = 1 and use it to find sin(θ), cos(θ), or tan(θ) given sin(θ), cos(θ), or tan(θ) and the quadrant of the angle.
- HSF-TF.C.9(+) Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.
Scroll Down
HSF-TF.C.9
(+) Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.
26 Lesson(s)
Playing with the Numbers
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
Students transform equations and graphs of trig functions to earn points and win the game!
Standards:
Favorites
(3)
Resources
(22)
Reflections
(3)
Unit Review Game: Lingo
12th Grade Math »
Unit: Trigonometric Relationships
12th Grade Math »
Unit: Trigonometric Relationships
Big Idea:
Today's review game will bring high energy and deep thinking into the classroom.
Standards:
Favorites
(6)
Resources
(6)
Unit Assessment: Trigonometric Relationships
12th Grade Math »
Unit: Trigonometric Relationships
12th Grade Math »
Unit: Trigonometric Relationships
Big Idea:
Assess your students' understanding of this unit.
Standards:
Favorites
(1)
Resources
(3)
Does cos(A - B) = cos(A) - cos(B)?
12th Grade Math »
Unit: Trigonometric Relationships
12th Grade Math »
Unit: Trigonometric Relationships
Big Idea:
Students disprove a potential identity and then derive the real cos(A - B) formula.
Standards:
Favorites
(1)
Resources
(12)
Reflections
(1)
Sum and Difference Day 1 of 2
12th Grade Math »
Unit: Trigonometric Identities
12th Grade Math »
Unit: Trigonometric Identities
Big Idea:
After analyzing a proof for the sum of angles sine formula, students work to produce the other sum and difference formulas.
Standards:
Favorites
(1)
Resources
(18)
Reflections
(2)
Midterm Review Workshop
12th Grade Math »
Unit: Midterm Review and Exam
12th Grade Math »
Unit: Midterm Review and Exam
Big Idea:
Students work on midterm review and let you know what they still need help with.
Standards:
Resources
(3)
Weather Ups and Downs
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
This lesson is awesome because it gives your students a real world connection to periodicity using weather data. They get to fit a sine and/or cosine graph to actual data!
Standards:
Favorites
(7)
Resources
(11)
When Will We Ever Use This
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
Want a good answer to “When will we ever use this?” This lesson gives students an opportunity to explore applications of inverse trig functions.
Standards:
Favorites
(1)
Resources
(9)
Tangent Modeling
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
This lesson is awesome because it gives your students a connection to tangent periodicity using a real-world example. They generate data and create a tangent equation that fits it.
Standards:
Favorites
(2)
Resources
(9)
Big Idea:
If you hate reviewing for an exam, maybe this lesson is for you. Let your students take charge of their review and see how much more you all get out of the process!
Standards:
HSF-TF.A
HSF-TF.A.3
HSF-TF.A.4
HSF-TF.B
HSF-TF.B.5
HSF-TF.B.6
HSF-TF.B.7
HSF-TF.C
HSF-TF.C.8
HSF-TF.C.9
MP1
MP2
MP3
Favorites
(1)
Resources
(19)
Big Idea:
Pythagoras again!? Make everybody happy – give your students another chance to connect trig functions to something they already understand.
Standards:
Resources
(11)
Pluses and Minuses
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
Automobiles, photography, music, weights…what do these have in common? Trigonometry, of course!
Standards:
Resources
(10)
Touching Tangents
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
This lesson is awesome because students get to explore tangent graphs and asymptotes with and without a graphing calculator
Standards:
Favorites
(1)
Resources
(14)
Double or Half
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
Double or nothing? No, double or half – angle formulas that is. Let students practice using these formulas to simplify or solve trig functions.
Standards:
Resources
(9)
Which Way Do We Go?
Algebra II »
Unit: Trigonometric Functions
Algebra II »
Unit: Trigonometric Functions
Big Idea:
Which way do we go? Help your students learn strategies for choosing which trig function makes the best model for real-world data.
Standards:
Resources
(11)
Common Core Math
Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade
Seventh Grade
HS Number & Quantity
HS Algebra
HS Functions
HS Geometry
Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade
Seventh Grade
Eighth Grade
Ninth and Tenth Grade
Kindergarten
First grade
Second grade
Third Grade
Fourth grade
Fifth grade
Middle School
Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade
Seventh Grade
HS Number & Quantity
HS Algebra
HS Functions
HS Geometry
Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade
Seventh Grade
Eighth Grade
Ninth and Tenth Grade
Kindergarten
First grade
Second grade
Third Grade
Fourth grade
Fifth grade
Middle School