In this video, I explain how to use Pythagorean identities to simplify trigonometric expressions. We focus on substituting 1-sin²θ with cos²θ to make the equation easier to work with, verifying the ...

The tablet known as Plimpton 322, dated to around 1800 BCE, contains 15 rows of numbers linked to Pythagorean triples (numbers that you could use to draw right triangles). These were not just simple ...

Identity theft protection services are your first line of digital defense, alerting you to irregularities in your credit reports and more. The best apps alert include three-bureau credit monitoring, ...

Preferred stock is a little-known type of investment that combines the qualities of both bonds and common stocks. Preferred shares don't generate nearly the kind of excitement that common shares do.

Sarah Schuster has a journalism degree from Syracuse University. She spent seven years helping people tell their mental health stories at The Mighty, and is currently pursing a master's in social work ...

Shelby is an editor with an affinity for covering home improvement and repair, design and real estate trends. She also specializes in content strategy and entrepreneur coaching for small businesses, ...