👉 Learn how to evaluate the tangent of an angle in degrees using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, ...

A red circle is inscribed inside a blue square. The arrangement leaves gaps in the square’s four corners, two of which are filled with smaller circles that just barely touch the big red circle and the ...

Martin Valkanov, a student at San Diego French-American School in La Jolla, followed up his successful creation of an eco-friendly sunscreen by winning a silver award in the World Mathematics Team ...

After 27 years, the Berkeley Math Circle's flagship BMC-Upper program has shut down because the University of California, Berkeley implemented new background check rules requiring campus visitors to ...

Hannah Cairo shook the math world when she disproved the Mizohata-Takeuchi conjecture, a 40-year-old unsolved math problem, when she was only 17. Well ahead of her peers in math, Cairo applied to ...

Started by CU Boulder applied mathematics Teaching Professor Silva Chang, Colorado Math Circle is celebrating 20 years of bringing middle and high school students together in a community that has fun ...

An airplane, traveling with a constant engine speed, makes a large and perfect circle parallel to the ground. There is no wind. Will it complete the same circle in greater, less or the same time if ...

Are you ready for this math riddle test? Okay, in today’s math riddle, a series of circle-based numbers is given, which is used as logical arithmetical reasoning to test your mental ability. So, can ...

Hannah Cairo found herself stuck on a problem that wouldn’t leave her mind. It wasn’t a regular homework assignment—it was a decades-old mathematical puzzle believed to be true by leading experts in ...

CHICAGO, July 11, 2025 (GLOBE NEWSWIRE) -- Math Circles of Chicago received a $5,000 grant from the SBB Research Group Foundation, which awards monthly grants to support impactful organizations. Math ...