Trigonometry
Learn about the definition of the basic trigonometric functions (sin(x), cos(x), and tan(x)), and use advanced trigonometric functions for various purposes.
This course contains 14 segments:
Law of sines
Learn about the Law of sines and how to use it in order to find missing side lengths and angles in general triangles.
Law of cosines
Learn about the Law of cosines and how to use it in order to find missing side lengths and angles in general triangles.
Solving general triangles
Use the power of trigonometry in order to solve various problems that involve triangles.
Introduction to radians
Learn about radians, which are the official unit of measurement for angles in algebra (in contrast to degrees, which are used in geometry).
Unit circle definition of sine, cosine, & tangent
Learn how the trigonometric ratios are extended to all real numbers using algebra. Start solving simple problems that involve this new definition of the trigonometric functions.
Graphs of sine, cosine, & tangent
Learn how the graphs of y=sin(θ), y=cos(θ), and y=tan(θ) look, using the unit circle definition of the functions.
Basic trigonometric identities
Learn about very useful trigonometric identities that arise by considering different properties of the unit circle definition.
Trigonometric values of special angles
Learn how to find the trigonometric values of some special angles without the use of a calculator.
Pythagorean identity
Prove the Pythagorean trigonometric identity for all real numbers and use it in order to solve problems.
Introduction to amplitude, midline, & extrema of sinusoidal functions
Learn about very important features of sinusoidal functions: the amplitude and the midline. Learn how they relate to the extremum points of the function.
Finding amplitude & midline from formula
Learn how to find the amplitude and the midline of the graph of a sinusoidal function from its formula. For example, find the amplitude and the midline of f(x)=3*sin(2x-1)+5.
Period of sinusoidal functions
Learn about the period of sinusoidal functions: how it relates to extremum points and the midline, and how to find it from the formula of the function. For example, find the period of f(x)=3*sin(2x-1)+5.
Graphing sinusoidal functions
Learn how to draw the graph of sinusoidal functions. For example, draw the graph of f(x)=-2*cos(πx)-7.
Constructing sinusoidal functions
Learn how to find the formula of a sinusoidal function from its graph or a few selected features. Model real-world situations with sinusoidal functions.
Get a Reminder
Rating | Not enough ratings |
---|---|
Length | 14 segments |
Starts | On Demand (Start anytime) |
Cost | Free |
From | Khan Academy |
Download Videos | On all desktop and mobile devices |
Language | English |
Subjects | Mathematics |
Tags | Math |
Get a Reminder
Similar Courses
Careers
An overview of related careers and their average salaries in the US. Bars indicate income percentile.
Enterprise Architecture-Corp Functions $66k
BUILD Leadership Development Program-HR Generalist, Corporate Functions $67k
Marketing Coordinator - Functions & Promotions $73k
BUILD Leadership Development Program-HR Generalist, Corporate Functions Manager $113k
Senior Corporate Functions Recruiter - Talent Acquisition Specialist $114k
Write a review
Your opinion matters. Tell us what you think.
Please login to leave a review
Rating | Not enough ratings |
---|---|
Length | 14 segments |
Starts | On Demand (Start anytime) |
Cost | Free |
From | Khan Academy |
Download Videos | On all desktop and mobile devices |
Language | English |
Subjects | Mathematics |
Tags | Math |
Similar Courses
Sorted by relevance
Like this course?
Here's what to do next:
- Save this course for later
- Get more details from the course provider
- Enroll in this course