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Matematikk

Right Triangle Kalkulator

Pythagoras setning — a² + b² = c²

Variabelbeskrivelse

a= legb= other legc= hypotenuseA= areaα,β= acute angles

Pythagorean theorem

Relationship between the three sides.

Area

Half the product of the two legs.

Trigonometric ratios

SOH-CAH-TOA for angle α (opposite side a).

sin α
cos α
tan α

Angle from sides

Find an angle when all sides are known.

Angle α
Angle β

Detaljert guide kommer snart

Vi jobber med en omfattende veiledning for Right Triangle Kalkulator. Kom tilbake snart for trinnvise forklaringer, formler, eksempler fra virkeligheten og eksperttips.

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Pro Tips

To check if a triangle is a right triangle: compute a²+b² and c². If equal, it's a right triangle. Also: if a triangle's longest side satisfies c²>a²+b², it's obtuse; if c²<a²+b², it's acute.

Vanskelighetsgrad:Middels

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The 3-4-5 right triangle was known to ancient Egyptians, who used knotted ropes with 12 equal spaces to create right angles for surveying land after Nile floods. This "rope-stretching" method is one of the earliest practical applications of the Pythagorean theorem.

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Reviewed May 2026
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