Pythagorean trigonometric identity
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English[edit]
Noun[edit]
Pythagorean trigonometric identity (plural Pythagorean trigonometric identities)
- (trigonometry) The equality , holding for all real and complex x, equivalent to the application of the Pythagorean theorem to the unit circle.
Translations[edit]
statement that sum of squares of sine and cosine equals one
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