I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

In this video I will show you how to evaluate the tangent of -75 degrees. We will do this by breaking up negative 75 degrees to 45 -120. We will then apply the difference formula for tangent and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...