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From CBS News: “Two high school seniors had proved a mathematical puzzle that was thought to be impossible for 2,000 years. Ne’Kiya Jackson and Calcea Johnson were working on a school-wide math contest that came with a cash prize. The seniors were familiar with the Pythagorean Theorem, a fundamental principle of geometry. You may remember it from high school: a² + b² = c². When you know the length of two sides of a right triangle, you can figure out the length of the third. What no one told them was there had been more than 300 documented proofs of the Pythagorean Theorem using algebra and geometry, but a proof using trigonometry was thought to be impossible.”
Susan Bennett, the voice of Siri, was also the voice of the first ATM
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From The Hustle: “I did jingle and voice-over work for hundreds of companies — Coca-Cola, McDonald’s, Macy’s, Goodyear, Papa John’s, IBM. I am the voice you hear over the loudspeaker at Delta Airlines gates, and also on a bunch of GPS and phone systems. And then in the early ‘70s, The First National Bank of Atlanta, now Wells Fargo, started introducing some of the earliest ATM machines, but nobody would use them! People didn’t trust computers yet. So, they decided to personalize the machine by putting a little face of a smiling girl on it. They called her “Tillie the All-Time Teller,” and they hired me to sing a jingle in her voice. It became the first successful ATM machine in the United States.”
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Continue reading “Teens found a trigonometry proof for the Pythagorean Theorem”