The formula is so simple that there's only a few tricks a teacher can pull on an arc length without making it a word problem. Also, if you've got a standardized test coming up (SAT, GRE, etc.), you probably won't remember the formula on test day, so I'll also show you how to do these problems in a simple, formula-free way.
Arc Length Word Problems
Word problems are where arc length usually gets tricky, and depending on your teacher, these can get really tough! And often teachers make things harder by asking questions about bike gears and cars where you have to find the velocity of the bike based on how fast the wheels or cranks are turning. Not easy, but this video gets you through the most common types of questions.
Area of Sectors
These problems tend to be a lot easier than arc length because, well, sectors are boring. There aren't a lot of fancy word problems to play with. That said, there are a few tricks teachers can pull. Also, if you've got a standardized test coming up (SAT, GRE, etc.), I'll show you how to do these problems in a simple, formula-free way.
If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)