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Using Trigonometry | Algebra 2 Unit with Videos

Grade Levels
10th - 12th, Homeschool
Formats Included
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  1. PLEASE NOTE: This is the lowest price that will every be available on this bundle. ADDITIONAL ITEMS ARE CONTINUING TO BE ADDED and the price will increase at this time. Each unit includes:Video lessons that teach each concept in a way students can easily understandGuided student notes that keep stu
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Each lesson in this Matrices Unit is taught via video with accompanying notes, review, and assessments. This unit teaches the following concepts:

  • Area & Law of Sines
  • The Law of Cosines
  • Basic Trig Identities
  • Simplifying Trig Expressions
  • Basic Trig Equations
  • Trig Equations with Different Periods

This unit includes:

  • Video lessons that teach each concept in a way students can easily understand
  • Guided student notes that keep students engaged, hold them accountable, and serve as a fantastic study tool (teacher’s version is also included)
  • Quick review videos to reinforce key concepts
  • Unit review & study guide that teach study skills & improve test scores
  • Editable assessments that make it easy to accurately assess students' skills
  • BONUS!! Law of Sines Ambiguous Case Activity - Deepens conceptual understanding of recently taught skills.
  • NOTE: This unit DOES NOT contain differentiated practice sets.

Here’s a detailed list of the objectives taught in this unit:

12.1 Area & Law of Sines
OBJECTIVE 12.1A: To use the law of sine to determine the area of an oblique triangle
OBJECTIVE 12.1B: To use the law of sines to solve oblique triangles
OBJECTIVE 12.1C: To determine all angle measures & side lengths of the ambiguous case

12.2 The Law of Cosines
OBJECTIVE 12.2: To use the law of cosines to solve oblique triangles

12.3 Basic Trig Identities
OBJECTIVE 12.3A: To identify basic trig identities OBJECTIVE 12.3B: To verify basic trig identities

12.4 Simplifying Trig Expressions
OBJECTIVE 12.4: To simplify trig expressions

12.5 Basic Trig Equations
OBJECTIVE 12.5A: To solve trig equations for a given interval where “b” = 1
OBJECTIVE 12.5B: To find all solutions for trig equations where “b” = 1

12.6 Trig Equations with Different Periods
OBJECTIVE 12.6A: To solve trig equations for a given interval where “b” ≠ 1
OBJECTIVE 12.6B: To find all solutions for trig equations where “b” ≠ 1


As veteran math teachers, we’ve learned firsthand how to explain complex topics in a way that makes sense to students. We absolutely love those light bulb moments and are committed to bringing more of them to your students as well. Hence our name - MathLight!

We’re here to provide you with awesome resources to enhance your math classroom. But what makes our program uniquely amazing is that it’s fully integrated with video lessons. 

You're going to LOVE having videos that teach & review each lesson. You can use them to...

  • Flip your classroom
  • Easily catch up absent students
  • Provide extra support for struggling students
  • Supplement or replace your own lectures
  • And much more

Combine our awesome video lessons with the complete system of guided notes, differentiated practice, and editable assessments, and you have all you need to create a dynamic, engaging, and successful classroom culture. 

You can finally focus on teaching because we’ve done all the prep work for you.


Download the preview to find out more about all of the amazing features & benefits available to you in MathLight.


More MathLight Algebra 2 Units:

Unit 1: Basic Equations

Unit 2: Linear Functions

Unit 3: Linear Systems

Unit 4: Matrices

Unit 5: Quadratics

Unit 6: Polynomial Functions

Unit 7: Roots and Radicals

Unit 8: Exponential and Logarithmic Functions

Unit 9: Rational Functions

Unit 10: Conic Sections/ Quadratic Relations

Unit 11: Periodic Functions & Trigonometry

Unit 12: Using Trigonometric Identities
Unit 13: Sequences & Series

Unit 14: Probability & Statistics

Total Pages
Answer Key
Teaching Duration
2 Weeks
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to see state-specific standards (only available in the US).
Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in right and non-right triangles (e.g., surveying problems, resultant forces).
Prove the Laws of Sines and Cosines and use them to solve problems.
Derive the formula 𝐴 = 1/2 𝘢𝘣 sin(𝐶) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.
Explain and use the relationship between the sine and cosine of complementary angles.
Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.


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