Sin^2 x + cos^2 x = 1

  • Thread starter Mattara
  • Start date
  • #1
344
1
What is the English word for this rule? It doesn't sound right if I do a direct translation and google didn't turn up much.

Thank you :smile:
 

Answers and Replies

  • #2
2,076
2
(One of) The most famous trigonometric identity? ;) You'll generally find it in a list titled that way.
 
  • #3
Doc Al
Mentor
45,140
1,439
I think it's called the Pythagorean identity.
 
  • #5
344
1
Thanks a lot, both of you. The name for it in my native language has been highly influenced by the number "1" :/
 
  • #6
80
0
What would it be called in your native language? In Danish it is readily called "Idiotformelen" -- the idiot formula...
 
  • #7
344
1
That was funny. It would be "trigonometriska ettan" or "(the) trigonometry 1"
 

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