Mar 15, 2018 · For Pi Day 2018 Matt Parker calculated π by hand using the Chudnovsky algorithm.

You need a method to calculate exact $\pi$ by hand by an iteration? Or just some good numerical approximations, which easy to evaluate? In the first case you can have this. $$ \pi = \left( \frac{2\sqrt{2}}{9801} \sum^\infty_{k=0} \frac{(4k)!(1103+26390k)}{(k!)^4 396^{4k}} \right)^{-1}. $$

May 3, 2024 · Are you ready to give your mathematics skills a boost? These simple math tricks can help you perform calculations more quickly and easily. They also come in handy if you want to impress your teacher, parents, or friends.

Mar 15, 2015 · The trick embodied by Machin's formula is to express a straight angle as a sum/difference of the corner angles of (a small number of different sizes of) long and thin right triangles with simple integer ratios between the cathetes.

Dec 20, 2024 · Math Tricks provide quick solutions, a fundamental understanding of mathematical principles to address more complex problems. These shortcuts cover a range of mathematical operations, including multiplication, division, finding square roots, estimating values, checking divisibility, and more.

Students can find out the value of Pi on their own by MEASURING the circumference (with a measuring tape) and the diameter (with a ruler) of several circles, and then calculating the ratio of them. Another neat activity is Archimedes' method of using inscribed and circumscribed circles.

Learn some tricks to help you remember the values of a unit circle and Trig Ratio of Special Angles in degrees (0, 30, 45, 60, 90) and also in radians, Unit Circle Hand Trick (in radians and in degrees), tricks for memorizing the unit circle chart, Unit Circle Song, with video lessons, examples and step-by-step solutions.

For Pi Day 2016 I tried to calculate π by hand, using an infinite series. It goes ok.