Trigonometry
Triangles are not always right (although they are never wrong), but when they are it opens up an exciting world of possibilities. Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.
This course contains 11 segments:
Special right triangles
We hate to pick favorites, but there really are certain right triangles that are more special than others. In this tutorial, we pick them out, show why they're special, and prove it! These include 30-60-90 and 45-45-90 triangles (the numbers refer to the measure of the angles in the triangle).
Introduction to the trigonometric ratios
Learn what sine, cosine, and tangent are.
Solving for a side in a right triangle using the trigonometric ratios
Learn how to find a side length in a right triangle when given one side length and one acute angle.
Solving for an angle in a right triangle using the trigonometric ratios
Learn how to find an acute angle in a right triangle when given two side lengths.
Modeling with right triangles
Solve real-world problems that can be modeled by right triangles, using trigonometry.
Trigonometric ratios and similarity
Learn how the trigonometric ratios are derived from triangle similarity considerations.
Sine and cosine of complementary angles
Learn about the relationship between the sine of an angle and the cosine of its complementary angle, which is the angle that completes to 90°.
The reciprocal trigonometric ratios
Learn about the remaining three side ratios in a right triangle: the secant, the cosecant, and the cotangent.
The 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.
The 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.
Get a Reminder
Rating | Not enough ratings |
---|---|
Length | 11 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 Geometry |
Get a Reminder
Similar Courses
Careers
An overview of related careers and their average salaries in the US. Bars indicate income percentile.
Right of Way Agent Trainee $31k
Right of Way Agent 2 4 $31k
Relocation Right of Way Agent $35k
Right of Way Attorney 2 $39k
Regional Right Revenue Specialist $58k
Right of Way System Admin $58k
CLINICAL PROFESSIONAL (BCBA/LP/LPA) RALEIGH/DURHAM/TRIANGLE AREA $61k
Supervisor Right of Way Agent Contractor $64k
Specialist Right of Way $66k
Right of Way Agent Contractor Manager $89k
Right Angle Engineer $92k
Senior Right of Way Agent 2 $93k
Write a review
Your opinion matters. Tell us what you think.
Please login to leave a review
Rating | Not enough ratings |
---|---|
Length | 11 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 Geometry |
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