Online calculator and formulas for calculating a right triangle
This function calculates the most important parameters of a right triangle when the lengths of two sides are known. As result, the cathet and hypotenuse, height, perimeter, area, hypotenuse sections and the angles are displayed.
For calculation select the pages you are familiar with in the menu and enter their values. Then click on the 'Calculate' button.
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In the case of a right angle, the cathets are the two sides at the right angle. The hypotenuse is the side opposite the right angle. The height is measured from the right angle to the hypotenuse. The hypotenuse sections are the sections of the hypotenuse from the respective corner to the point where the line of height hits the hypotenuse.
Calculate hypotenuse \(c \) |
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| \(\displaystyle c=\sqrt{a^2+b^2} \) | |||
Calculate cathetus \(a \) |
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| \(\displaystyle a=\sqrt{c^2-b^2} \) | |||
Calculate cathetus \(b \) |
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| \(\displaystyle a=\sqrt{c^2-a^2} \) | |||
Calculate area \(A \) |
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| \(\displaystyle A = \frac{ a · b}{2} \) | \(\displaystyle A = \frac{ c · h}{2} \) | ||
Calculate the perimeter \(P \) |
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| \(\displaystyle P=a+b+c \) | |||
Calculate height \(h \) |
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| \(\displaystyle h = \frac{ a · b}{c} \) | \(\displaystyle h=\sqrt{ p · q} \) | ||
Calculate section \(p \) |
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| \(\displaystyle p= \frac{a^2}{c} \) | |||
Calculate section \(q\) |
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| \(\displaystyle q = \frac{b^2}{c} \) | |||
Calculate angle \(α \) |
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| \(\displaystyle α = arcsin \left( \frac{a}{c} \right) \) | \(\displaystyle α = arccos \left( \frac{b}{c} \right) \) | ||
Calculate angle \(β\) |
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| \(\displaystyle β = arcsin \left( \frac{b}{c} \right) \) | \(\displaystyle β = arccos \left( \frac{a}{c} \right) \) | ||
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