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Ch 24: Trigonometric Applications in Precalculus: Help and Review

About This Chapter

The Trigonometric Applications in Precalculus chapter of this High School Precalculus Help and Review course is the simplest way to master trig applications in precalculus. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of trigonometric applications in precalculus.

Who's it for?

Anyone who needs help learning or mastering high school precalculus material will benefit from taking this course. There is no faster or easier way to learn high school precalculus. Among those who would benefit are:

  • Students who have fallen behind in understanding how to solve real world problems using the Law of Cosines or Law of Sines
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning math (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about trigonometric applications in precalculus
  • Students who struggle to understand their teachers
  • Students who attend schools without extra math learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the Trigonometric Applications in Precalculus chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Trigonometric Applications in Precalculus chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any trig applications in precalculus question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

This chapter helps students review the concepts in a trigonometric applications in precalculus unit of a standard high school precalculus course. Topics covered include:

  • Using the Law of Cosines to solve oblique triangles
  • Solving real world problems with the Law of Cosines
  • Using the Law of Sines to solve a triangle and in real world applications
  • Proving addition and subtraction formulas for sine, cosine and tangent

7 Lessons in Chapter 24: Trigonometric Applications in Precalculus: Help and Review
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.

How to Find the Period of Cosine Functions

6. How to Find the Period of Cosine Functions

This lesson shows how to find the period of cosine functions. We then take it a step further and look at the amplitude, phase shift, and vertical shift of a cosine function and how to find all of these characteristics of cosine functions.

How to Find the Period of Sine Functions

7. How to Find the Period of Sine Functions

This lesson explains the forms that the sine function can take on and teaches us how to find the period of these functions. After learning how to find the period, we'll look at a real world application.

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: Help and Review course

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