Pravougaoni trougao — разлика између измена
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=== Uglovi ===
* ''A'' i ''B'' su [[Угао|komplementarni]].<ref>{{Cite web|url=http://www.ricksmath.com/right-triangles.html |title=Properties of Right Triangles |accessdate=7. 10. 2017 |archive-url=https://web.archive.org/web/20111231222001/http://www.ricksmath.com/right-triangles.html |archive-date=31. 12. 2011 |
* <math>\displaystyle \cos{A}\cos{B}\cos{C}=0.</math><ref name=Andreescu/><ref name=CTK>CTK Wiki Math, ''A Variant of the Pythagorean Theorem'', 2011, [http://www.cut-the-knot.org/wiki-math/index.php?n=Trigonometry.AVariantOfPythagoreanTheorem].</ref>
* <math>\displaystyle \sin^2{A}+\sin^2{B}+\sin^2{C}=2.</math><ref name=Andreescu/><ref name=CTK/>
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