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Trigonometry

  • Trigonometric Functions
    • Graphing Trigonometric Functions
    • Circular Functions
    • Inverse Trigonometric Functions
    • Integrals of Trigonometric Functions
  • Complex Numbers
  • Angle
    • Degrees
    • Negative Angles
    • Angle Bisector
    • Angle Pairs
    • Angle Sum
    • Complementary Angles
    • Transversal
    • Supplementary Angles
    • Bisect Angle
    • Perpendicular Bisector
  • Triangle
    • Pythagorean Theorem
    • Right Triangles
    • Solving Triangles
    • Angle Bisector
    • Angle Sum
    • Congruent Triangles
    • Perpendicular Bisector
    • Similar Triangles
    • Area of a Triangle
    • Equilateral Triangle
    • Isosceles Triangle
    • Trigonometric Ratio
    • Classifying Triangles
  • Trigonometric Identities
    • Law of Cosines
    • Law of Sines
    • Law of Tangents
    • Double Angle Formula
    • Half-Angle Formula
  • Vectors
    • Dot Product

Show Related topics


  • Trigonometry Lesson Plans
  • Heron's Formula
  • Parallel
  • Diagonal
  • Sine and Cosine Rules

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Trigonometry Teacher Resources

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Combine the triangle and the Cartesian coordinate grid to produce Trigonometry. Trig functions, complex numbers, identities, vectors, and real life applications like circuits are here to energize your classroom.
Showing 1,447 resources
11 Items in Topic
Ricochet Science: Math in Science
Lesson Planet Curated

Ricochet Science: Math in Science

For Students 9th - Higher Ed
The 11 resources in the Math in Science playlist cover concepts introduced in a high school or college biology class. Topics include Comparing Metric Units of Measurement, Mass and Weight, Volume, and Length. Other videos focus on...
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12 Items in Unit
Common Core Algebra 2, Unit 9
Lesson Planet Curated

Common Core Algebra 2, Unit 9

For Teachers 9th - 12th Standards
Flip your classroom, or offer engaging visual aids to your lessons with a series of videos that explore the concept of trigonometry. After an introduction to the topic, high schoolers investigate reference triangles, unit circles, and...
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12 Items in Course
Flipped Math: Geometry
Lesson Planet Curated

Flipped Math: Geometry

For Students 9th - 12th Standards
Imagine taking a complete geometry course remotely! Eleven units make up the My Geometry course. Each unit follows the Flipped-Mastery cycle of learning, divided into two semesters. Pupils watch and take notes on a video that details the...
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13 Items in Course
Flipped Math: Common Core Algebra 2
Lesson Planet Curated

Flipped Math: Common Core Algebra 2

For Teachers 9th - 12th Standards
Algebra 2 pupils will flip over a 13-unit course that addresses Common Core standards designed for out-of-class learning. The first-semester unit covers polynomials, polynomial functions, radicals, transformations of functions, and...
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42 Items in Unit
TeachEngineering: Photovoltaic Efficiency
Lesson Planet Curated

TeachEngineering: Photovoltaic Efficiency

For Teachers 9th - 12th Standards
Many factors affect the power output of photovoltaic (PV) solar panels. Four lessons and activities provide young engineers with the background information they need to design, build, and test photovoltaic systems.
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30 Items in Unit
Geometry Unit 7: Right Triangles
Lesson Planet Curated

Geometry Unit 7: Right Triangles

For Students 9th - 12th Standards
Six lessons comprise the Geometry Unit 7: Right Triangles unit module. In the first lesson, pupils review the Pythagorean Theorem and determine how to use the converse to determine whether a triangle is right, obtuse, or acute. Next,...
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29 Items in Unit
Geometry Unit 9: Area of Polygons
Lesson Planet Curated

Geometry Unit 9: Area of Polygons

For Teachers 9th - 12th Standards
Six lessons make up the Geometry Unit 9: Area of Polygons unit module. Pupils review the formulas for finding the area of parallelograms and triangles. They apply previous learning of trigonometric ratios and the Pythagorean Theorem to...
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Instructional Video1:55
1
1 In 1 Collection
Using Trigonometry to Determine the Height of a Tall Object Instructional Video
Ricochet Science

Using Trigonometry to Determine the Height of a Tall Object

For Students 9th - 12th
How can you calculate the height of a tree without having to climb it all the way to the top? The sixth installment of an 11-part Math in Science video series demonstrates how to use trigonometry to determine the height of a tree. 
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eBook
Trigonometry eBook
Schoolcraft College

Trigonometry

For Teachers 9th - 12th Standards
This trigonometry textbook takes the learner from a basic understanding of angles and triangles through the use of polar coordinates on the complex plane. Written by a mathematician-engineer, examples and problems here are used to...
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Instructional Video2:51
Trigonometry work problems (part 2) Instructional Video
Curated OER

Trigonometry work problems (part 2)

For Students 11th - Higher Ed
In this part 2 video, Sal finishes the trigonometric word problem of the wayward ship captain. He wisely continues the algebra work on the problem before finally turning to his calculator for the very last calculation.
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Lesson Plan
Introduction to Trigonometry Lesson Plan
Project Maths

Introduction to Trigonometry

For Teachers 9th - 12th Standards
The topic of trigonometric ratios is often covered with loads of rote memorization baked into the activity. This activity set, however, leans more on using similar triangles and discovery learning to help young geometers develop a deeper...
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Handout
1
1 In 1 Collection
Math Handbook: Trigonometry Handout
Curated OER

Math Handbook: Trigonometry

For Students 9th - 12th Standards
You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and...
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Worksheet
Review Sheets: Trigonometry Worksheet
Lane Community College

Review Sheets: Trigonometry

For Students 9th - 12th Standards
Review guide, practice test, homework packet? Yes, yes, and yes as it's all possible with a wonderful trigonometry packet. Every type of problem is there, starting from the unit circle and ending with conic sections. 
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Worksheet
1
1 In 1 Collection
Basic Trigonometry and Radians Worksheet
University of Adeaide

Basic Trigonometry and Radians

For Teachers 9th - 12th Standards
A fabulous set of examples and problems that introduce basic trigonometry concepts, this packet is set apart by the care it takes to integrate both radians and degrees into the material. After defining radians, the author demonstrates...
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Instructional Video9:27
Proof of the Law of Cosines, Trig Identities and Examples, Trigonometry Instructional Video
Khan Academy

Proof of the Law of Cosines, Trig Identities and Examples, Trigonometry

For Students 11th - Higher Ed
Sal derives the Law of Cosines using a method similar to the wayward ship captain word problem he solves in another video. This video provides a good review of using the SOH-CAH-TOA model, the Pythagorean Theorem, some basic trig...
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Instructional Video9:57
Trigonometry Word Problems (Part 1) Instructional Video
Khan Academy

Trigonometry Word Problems (Part 1)

For Students 10th - 12th
Sal starts to solve a trigonometric word problem of a wayward ship captain who veers off course and once aware of his predicament, needs to know how far he is from his destination. Instead of using the Law of Cosines in his solution, Sal...
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Instructional Video6:34
Proof: Law of Sines, Trig Identities and Examples, Trigonometry Instructional Video
Khan Academy

Proof: Law of Sines, Trig Identities and Examples, Trigonometry

For Students 11th - Higher Ed
Sal proves the Law of Sines in this video by using the SOH-CAH-TOA model and setting up equivalent ratios.
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Instructional Video9:04
Introduction to the Unit Circle, Trigonometry Instructional Video
Khan Academy

Introduction to the Unit Circle, Trigonometry

For Students 10th - 12th
In this video, Sal shows how the sine and cosine of an angle are defined on the unit circle. He inscribes a 30-60-90 triangle in the unit circle and explains how to use SOH-CAH-TOA to find the circle's coordinates.
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Instructional Video7:56
Trigonometry – Missing Angles Instructional Video
Corbett Maths

Trigonometry – Missing Angles

For Students 10th - 12th Standards
So what's your angle? Scholars watch a brief video that looks at how to find the missing angles of a right triangle using trigonometry. The narrator explains inverse trigonometric functions and shows how to apply them when solving for...
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Instructional Video2:51
Trigonometry Work Problems (Part 2) Instructional Video
Curated OER

Trigonometry Work Problems (Part 2)

For Students 10th - 12th
In this part two video, Sal finishes the trigonometric word problem of the wayward ship captain. He wisely continues the algebra work on the problem before finally turning to his calculator for the very last calculation.
Get Free Access See Review
Lesson Plan
Trigonometry and the Pythagorean Theorem Lesson Plan
EngageNY

Trigonometry and the Pythagorean Theorem

For Students 9th - 11th Standards
Ancient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...
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Assessment
Trigonometry Assessment
Mathed Up!

Trigonometry

For Students 10th - 12th
Learn how to solve a triangle. Young mathematicians view a video that explains how to apply trigonometry to find missing sides and angles of a right triangle. A worksheet tests their understanding of the concept.
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Lesson Plan
Concepts in Precalculus 1: Trigonometry Lesson Plan
Curated OER

Concepts in Precalculus 1: Trigonometry

For Teachers 11th - 12th
Students investigate trigonometry.  For this Algebra II/Pre-calculus/Trigonometry lesson, students explore Islamic achievements in mathematics as they calculate angles and distances using the Law of Sines and the Law of...
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Instructional Video6:26
3D Trigonometry Instructional Video
Corbett Maths

3D Trigonometry

For Students 10th - 12th Standards
Trigonometry still works in 3-D. Viewers of a short video see how to apply trigonometry in situations involving three-dimensional figures. They watch as a narrator works through a problem that requires finding the length of a diagonal...
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