Trigonometry with right triangles
Learn the basics of trigonometry: What are sine, cosine, and tangent? How can we use them to solve for unknown sides and angles in right triangles?
This course contains 9 segments:
Introduction to the trigonometric ratios
Meet your new best friends: sine, cosine, and tangent.
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°.
Trigonometric ratios of special triangles
Learn to find the sine, cosine, and tangent of 45-45-90 triangles and also 30-60-90 triangles.
Introduction to the Pythagorean trigonometric identity
Learn about a very special trigonometric identity that follows from the Pythagorean theorem.
The reciprocal trigonometric ratios
Learn about the remaining three side ratios in a right triangle: the secant, the cosecant, and the cotangent.
Get a Reminder
| Rating | Not enough ratings |
|---|---|
| Length | 9 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 Trigonometry |
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 | 9 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 Trigonometry |
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
