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The class Trigonometry: Sine, Cosine, and Tangent discusses the three basic ratios that are the basis for trigonometry. Trigonometry is based on the specific relationships between the sides and angles ...

Stossel exposed the failures of government-run schools 20 years ago. Today, the results are even worse. U.S. math performance ...

America faces an aging crisis: We have too few young people supporting too many older people — at the very moment Social Security, our national retirement program, nears insolvency. Why it matters: ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In October 2024, news broke that Facebook parent company Meta had cracked an "impossible" problem ...

Earlier today I set you the following set of numerical challenges to celebrate the arrival of 2026. Auld lang signs Here is an expression equal to 26 that uses six 1s: (1+1)×(1+1+11) Find expressions ...

As we say goodbye to 2025, let’s delight in its numerical charms one final time. The year was unique this century as being a square number. 44 2 = 1936 45 2 = 2025 46 2 = 2116 And since 45 = 20 + 25, ...

Tessellations aren’t just eye-catching patterns—they can be used to crack complex mathematical problems. By repeatedly reflecting shapes to tile a surface, researchers uncovered a method that links ...

Master 20 essential maths formulas in just 24 hours with a smart memory technique for fast learning and long-term recall.

a missing side in a right-angled triangle when another side and an angle are known. a missing angle in a right-angled triangle when two sides are known. In these formulae, the Greek letter θ (theta) ...