Abraham de Moivre
Abraham de Moivre was born on May 26, 1667. Moivre was born at Vitry and died in London on November 27, 1754. Moivre was interested in mathematics when he started his education in England. He was introduced to mathematics when he found a copy of "Newton’s Principles".
Trigonometry was first taken into analysis when De Moivre came up with the formula (cos x + I sin x)n. De Moivre is remembered by this formula by many mathematicians.
De Moivre also pioneered the development of the Probability theory. This theory is the study of possible outcomes of given events together with their relative likelihoods and distributions.
De Moivre also worked with Lambert, and came up with the formula (sin nx + I cos nx). This formula gives the quadratic factors.
While figuring out these formulas he was also a tutor and then became a mathematician.
De Moivre is also famous for a book that he had published in 1718. He published "The Doctrine of Chance".
De Moivre thought that he should sleep 15 minutes longer each night and from this arithmetic progression he calculated that he would die on the day that he slept 24 hours. And he was right, he did die. He was not the only person that did this and was right because Cardan did it too.
The definition for "Arithmetic Progression" is a sequence in which each number increases by the same amount (the common difference) over the previous one. For example: 5, 8, 11, 14, 17, ...