Trig Applications
Finding sides and angles
Start with the basics and progress through 2 lessons. Each lesson builds on the previous one.
0 of 2 lessons done
Test Your Knowledge
10 questions, new mix each time (from 30)
In This Topic (2 lessons)
Finding Missing Sides
Learn how to use trigonometric ratios to calculate unknown side lengths in right triangles.
Finding Missing Angles
Learn how to use inverse trigonometric functions to find unknown angles in right triangles.
Trigonometry applications extend beyond pure mathematics to solve real-world problems in navigation, physics, engineering, and astronomy. From calculating heights and distances to modeling waves and periodic phenomena.
What You'll Learn
- Solve navigation problems
- Apply trig to physics problems
- Calculate heights and distances
- Model periodic phenomena
- Use the law of sines and cosines
Frequently Asked Questions
When do I use law of sines vs law of cosines?
Use law of sines when you have AAS, ASA, or SSA. Use law of cosines when you have SAS or SSS.
How is trig used in navigation?
Navigation uses bearings (angles measured from north) and trigonometry to calculate distances and directions between points.
What are periodic phenomena?
Repeating patterns like sound waves, tides, seasons, and circular motion are modeled using sine and cosine functions.