I wrote an article about the "Pythagorean theorem" a few days ago, and I am very happy to see that everyone is very supportive. Thank you for your recognition of the methodology in this article. Now is the era of mobile phone dominance, except for people who are too small and too old, almost everyone has a mobile phone. In order to make it more convenient for you to use the "Pythagorean theorem" to calculate the right angle square problem encountered at any time, today I would like to introduce to you how to calculate the string length of the "Pythagorean theorem" with the calculator that comes with the mobile phone.
The "Pythagorean theorem" is therefore customarily called "hook 3, strand 4, chord 5" because the triangles composed of these 3 numbers can satisfy the conditions for forming right angles, and there are 6, 8, 10. 1, 1, 1.414 and so on. The first 2 groups of these numbers are integers, and the 3rd one is easy to remember. Strictly speaking, these numbers are only the conditions for satisfying the "Pythagorean theorem", not the definition of the "Pythagorean theorem".
The mobile phone comes with a calculator that comes with the function of calculating this formula. I use my Huawei phone to introduce the use as follows:
1 Open the phone calculator
2 Placing the phone horizontally is the state of the scientific computing screen
3 Remember the two parenthetical keys in the image above, one square key and one open square key.
4 If the length of the two right-angle edges is known to be 6 and 8, the length of the hypotenuse can be calculated as follows.
(1) Press the C key to clear 0 in the scientific calculator state.
(2) Press the keys in the following order in turn
display
Press the Equals key =, displayed as below, equal to 10.
5 If you repeat with the calculator the two right-angle edges 6 and 18 of the previous example, calculate the length of the hypotenuses. The order in which the keys are pressed above is shown below
Press the equal sign key =, which is displayed as follows
It is really convenient to calculate the "Pythagorean string" with the open square function of the mobile phone. Hopefully, this approach will help every sibling who sees this article.