In this video, I explain how to use Pythagorean identities to simplify trigonometric expressions. We focus on substituting ...

In this math tutorial, we demonstrate an alternative method for verifying trig identities, specifically focusing on a basic ...

Being able to identify which formula to use, sine or cosine, and when, is necessary to answer questions on this topic successfully. Check you are confident in how to use the sine and cosine rules.

We spend a lot of time thinking about the difficult people in our lives—the friend who can't take feedback, the partner who always has to be right, the coworker who turns everything into a fight. But ...

How good is your company at problem solving? Probably quite good, if your managers are like those at the companies I’ve studied. What they struggle with, it turns out, is not solving problems but ...

Heart valve diseases affect how blood flows through the heart muscle. Symptoms of heart valve disease can be subtle or develop slowly over time, with extreme fatigue often being the first sign.

Susan Bard, MD, is a board-certified general and procedural dermatologist with the American Board of Dermatology and a Fellow of the American College of Mohs Surgery. Some of the most common skin ...

2 News Problem Solvers listens to the community and works to hold people accountable and get answers needed. If you need an issue addressed call the Problem Solvers at 918-748-1502 or email ...