# How Is The Pythagorean Theorem Used Today

Updated on August 9, 2009

The Pythagorean Theorem is a simple mathematical equation with various uses today in geometry, trigonometry, architecture, and more.  The equation is as follows:

a2 + b2 = c2

This only applies for a right triangle, that is, a triangle that has a 90 degree angle.  C is the hypotenuse (the longest side), and A and B are the two other sides.  Thus if you know A and B, you can easily calculate C by using square roots.  Likewise if you know B and C or A and C.

The ability to find out this length quickly is useful in trigonometric and geometric proofs, as well as lengths for physics, and designs in architecture.

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## Popular

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• girl dat iz a hater of math.... -3-

5 years ago

u all shuld shaddup cuz no1 carz

• person1301

5 years ago

OMG o-o

• abhi

5 years ago

interesting

• ANUM

5 years ago

NEVER KEPT STUPID PHOTS ON THIS SITE ITS SHAME FOR PYTHAGORAS

• Spongebob Squarepants

6 years ago

WHO LIVES IN A PINEAPPLE UNDER THE SEA?...SPONGEBOB SQUAREPANTS!

• Unicorn

6 years ago

Hello fellow chickens

• Droopy

6 years ago

I think you all need to learn how to spell first!

• get lives

6 years ago

get lives

• This is stupid u guys all stfu

6 years ago

• Supriya

7 years ago

Maths is somtimes nice bt sontimes borin......

• HatesLosers

7 years ago

It amazes me how much time is wasted in arguing and jotting down stupid and pointless comments, rather than to try to give useful and substansive information about the subject.

• yellow

7 years ago

@douglas:WRONG, math is used in mcdonolds o_o, so if you dont know math, you got no job lol....so LEARN IT, i dont like math either :P

• yellow

7 years ago

....hey doods, one thing, WHAT THE HECK? math is what keeps us from dieing, and what kept us from dieing from bad stuff, and beasides, if you suck in math, get more good at it then -3-

• PeachesMakeMeSexy!!!!!

7 years ago

math is so freaking confusing....

• Andrinahope

7 years ago

all of you (dylan and mickey) just shut up and get a life!!!

• Pythagoras

7 years ago

How about you all shut up and be quite as i am Pythagoras and i am still alive

• math person

7 years ago

hi I do not agree with some of you i dont like math much

• sup?

7 years ago

I do not like math!

• nunya

7 years ago

you know what's a waste of time? arguing on whether math is useful or not!

• blah

7 years ago

ur stupid

• Matt

7 years ago

Yeah you guys should definitely be working on your grammer rather than math.haha

• Douglas

7 years ago

Let me just point out how pointless it is to argue over the internet. Math has seen multiple uses in modern day life. It is used to calculate taxes, used EXTENSIVELY in Science, and can be used to put multiple numbers together. Lets not leave out probability and estimation, we use it Everyday! Even a garbage man will say "We can probably hold about ____ more pounds in the truck. Just wanted to point out how much we DO use it and if you're going to argue, go on a site made specifically for that reason. I may hate math but if I'll be learning it in the Naval Academy, I had better get used to it. Unless you wanna work in Mcdonald's, you really should too.

• I am better than dylan and mickey

7 years ago

Math is awesome and intersting, but only if the teacher doesn't give homework!

• Pythagoras

7 years ago

I am glad to see young puils of today, revising what i have taught.

• Saucey harlet

7 years ago

balls up with soapy suds??? nomnom nom

• nichola

8 years ago

maths is so dam bitching hard but stil hav 2 do it

• Chelsea

8 years ago

Math is so friggen easy! that's only cuz i'm asian but whateves!! XP

• im the coooolest!!!!!!!!!!!!!!!!

8 years ago

the pythagoras thing is coool!!

i like it , its fFuUnN!!!

• im the coooolest!!!!!!!!!!!!.........

8 years ago

stop arguing you ffffffffrrrrrrrrreeeeaaaaakkkkkksssss!!!!!!!!! i kinda like math, kainda dnt lk it,...... so just live with that or il flush ur heads dwn the toilets,,, hahahahahahhhhhhhaaaaaaaaa!!!!!!!!!!

• JOSIE

8 years ago

HI ROSA LOVE U!!!

• ROSA

8 years ago

BLACK MAN HERE LOVING MATH!!!!! BIG NERD STATUS!!!I AM SO SMART ND IVAN IS DUMB!!!!!

-DOUBLE DEE

• DESTINY

8 years ago

I LOVE MATH I AM NERD ND I HAVE STRIGHT A'S IN THIS SUBJECT!!!! LOVING MATH

-BOLDER

• FELIPE

8 years ago

THIS MATH IS CONFUSING I AM LOST WITH ALL THIS HAHA

• dylan and mickey r retards

8 years ago

math is not a waste of time i will laugh when you finally realize that you were wrong this whole time

• awesome

8 years ago

dylan and mickey are both right. math is a waste of time. but hey, i still do it.

• Olivia

8 years ago

I totally agree with dawn and anna. Math is so important to daily life and if we didn't use it we would still be cavemen. Just because you two (dylan and mickey) cant do math doesnt mean you should criticize it!

• anna

8 years ago

i think you guys should try the dawn is cool therome its so good and works everytime

• dawn

8 years ago

ithink dylan and mickey are both... WRONG!!! so just shutup

• mickey

8 years ago

I agree with Dylan.

• dylan

8 years ago

i think math is a wast of time

• queen

8 years ago

i think its very easy to learn nd it can help you with ur mulitplcations

• HistoryGenius

9 years ago

working