Ch 24: Laws of Sine & Cosine: Homeschool Curriculum

About This Chapter

The Laws of Sine & Cosine unit of this High School Precalculus Homeschool course is designed to help homeschooled students learn about the real-world applications of trigonometry. Parents can use the short videos to introduce topics, break up lessons and keep students engaged.

Who's it for?

This unit of our High School Precalculus Homeschool course will benefit any student who is trying to learn methods for finding missing triangle sides and angles. There is no faster or easier way to learn about the laws of sine and cosine. Among those who would benefit are:

  • Students who require an efficient, self-paced course of study to learn about the laws of sine and cosine or the angle sum and difference identities for sine, cosine and tangent.
  • Homeschool parents looking to spend less time preparing lessons and more time teaching.
  • Homeschool parents who need a math curriculum that appeals to multiple learning types (visual or auditory).
  • Gifted students and students with learning differences.

How it works:

  • Students watch a short, fun video lesson that covers a specific unit topic.
  • Students and parents can refer to the video transcripts to reinforce learning.
  • Short quizzes and a laws of sine and cosine unit exam confirm understanding or identify any topics that require review.

Laws of Sine & Cosine Unit Objectives

  • Use the laws of sine and cosine to find missing triangle sides and angles.
  • Prove the addition and subtraction formulas for sine, cosine and tangent.
  • Apply the laws of sine and cosine to solve word problems.

5 Lessons in Chapter 24: Laws of Sine & Cosine: Homeschool Curriculum
Test your knowledge with a 30-question chapter practice test
Solving Oblique Triangles Using the Law of Cosines

1. Solving Oblique Triangles Using the Law of Cosines

After watching this video lesson, you will be able to use the law of cosines to help you find a missing side or missing angle of any kind of triangle. Also, you will see what oblique triangles are.

Solving Real World Problems Using the Law of Cosines

2. Solving Real World Problems Using the Law of Cosines

After watching this video lesson, you will be able to use the law of cosines to solve real-world problems. Learn what kinds of real-world problems the law of cosines can help you solve.

Using the Law of Sines to Solve a Triangle

3. Using the Law of Sines to Solve a Triangle

After watching this video lesson, you will be able to use the law of sines to find a missing side of a triangle as well as a missing angle of a triangle. Learn what you need to know about the triangle in order to use the formula.

Solving Real World Problems Using the Law of Sines

4. Solving Real World Problems Using the Law of Sines

After watching this video lesson, you will be able to use the law of sines to solve problems that you will encounter in the real world. Learn what kind of shape you need in order to solve your real world problems.

Proving the Addition & Subtraction Formulas for Sine, Cosine & Tangent

5. Proving the Addition & Subtraction Formulas for Sine, Cosine & Tangent

Watch this video lesson, and you will see how the angle sum and difference identities are derived for sine, cosine, and tangent. You will also learn how you can use these identities to help you solve problems.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the High School Precalculus: Homeschool Curriculum course

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