Right Triangle Calculator

Solve for all sides, angles, area, perimeter, and trigonometric functions of a right-angled triangle given any two parameters.

Right Triangle Trigonometry

A right-angled triangle has one interior angle measuring exactly 90 degrees (π/2 radians). The two non-right angles are complementary and always sum to 90 degrees (α + β = 90°).

Frequently Asked Questions

What is the SOH-CAH-TOA mnemonic?

SOH-CAH-TOA helps remember basic trigonometry: Sine = Opposite / Hypotenuse, Cosine = Adjacent / Hypotenuse, Tangent = Opposite / Adjacent.

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