Right Triangle Calculator

Calculate missing sides, angles, area, and perimeter of right triangles using Pythagorean theorem and trigonometry.

Calculator

Calculation Type

Side a

Side b

Select a calculation type and enter the required values to calculate the right triangle properties.

Right Triangle Properties

Sides

Angles

Area

-

Perimeter

-

Detailed Results

Step-by-Step Solution

Complete User Guide

Calculation Types

From Two Sides: Calculate all properties from two known sides
Find Missing Side: Find the missing side using Pythagorean theorem
From Angle and Side: Calculate all properties from one angle and one side
Find Missing Angle: Find the missing angle using trigonometry

Formulas Used

Pythagorean Theorem: a² + b² = c²
Area: (1/2) × a × b
Perimeter: a + b + c
Trigonometry: sin(A) = a/c, cos(A) = b/c, tan(A) = a/b

Examples

Example 1: From Two Sides

Input: a = 3, b = 4

Result: c = 5, A ≈ 36.87°, B ≈ 53.13°

Area: 6, Perimeter: 12