how might the Pythagorean theorem be used in everyday life?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

I just used it last summer while helping to build a deck. We wanted to check whether two pieces of wood made a right angle so we made a pencil mark 3 feet from the corner on one board, 4 feet from the corner on the other, and then we...

See
This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Get 48 Hours Free Access

I just used it last summer while helping to build a deck. We wanted to check whether two pieces of wood made a right angle so we made a pencil mark 3 feet from the corner on one board, 4 feet from the corner on the other, and then we measured the distance between the two pencil marks. It was almost exactly 5 feet, so we knew we had a nice right angle!

Actually, if you want to get technical, we used the converse of the Pythagorean Theorem, which tells us that if we have a triangle with side lengths 3, 4, and 5, it must be a right angle. Close enough though.

Approved by eNotes Editorial Team
An illustration of the letter 'A' in a speech bubbles

The Pythagorean theorem can be a very great help in finding the distance between two specigfic locations using the distance formula such that:

`D^2 = (x_A - x_B)^2 + (y_A - y_B)^2`

`x_A, y_A`  represents the x and y coordinates of the location A

`x_B, y_B`  represents the x and y coordinates of the location B

D represents the distance between locations A and B

You may also use Pythagorean theorem to evaluate the diagonal of your laptop screen.

Hence, these are just some of the many examples where Pythagorean theorem is of great help.

Approved by eNotes Editorial Team