👉 Learn how to solve equations using half-angle identities. To do this we will replace every trig function with half angles ...

In this video, learn how to use the dot operator in Excel to simplify adding formulas. Discover how to avoid unwanted zeros when dragging formulas and apply an IF statement along with the dot operator ...

Five years ago, mathematicians Dawei Chen and Quentin Gendron were trying to untangle a difficult area of algebraic geometry involving differentials, elements of calculus used to measure distance ...

Remainder. Product. Algorithm. Ordered pair. Seemingly jargony words and phrases like these, referring to specific math concepts, might seem complex for elementary school students to grasp. But ...

It may be a surprise to learn that you can define names of cells in Microsoft Excel instead of using the letter and number combinations. This makes it friendlier to read and understand. For example, ...

The Hechinger Report covers one topic: education. Sign up for our newsletters to have stories delivered to your inbox. Consider becoming a member to support our nonprofit journalism. Students, parents ...

Ramanujan’s elegant formulas for calculating pi, developed more than a century ago, have unexpectedly resurfaced at the heart of modern physics. Researchers at IISc discovered that the same ...

When Andrew Grigolyunovich first started using Excel more than two decades ago, he never imagined the spreadsheet program would land him in Las Vegas or on ESPN. The Latvian financial consultant ...

Have you ever stared at a tangled web of Excel formulas, wondering if there’s a better way to make sense of it all? For many, Excel’s LAMBDA function feels like a cryptic puzzle—powerful but ...

Before starting the tutorial, it’s important to understand degrees and radians. In Excel, they are used in trigonometric functions such as SIN, COS, and TAN, which need the angle to be in radians for ...

North Shore students excelled at the Long Island Math Fair this year, with 26 medals and one honorable mention. Of the district’s 27 middle and high schoolers who attended, all walked away with ...

What was the last movie you saw in theaters? I rarely go to the movies anymore, partly because I prefer TV series—particularly action shows with spies (recommendations welcome!). But I do go to the ...