Triangle Calculator – Instantly Solve Angles, Sides & Area
Triangle Calculator
What is a Triangle Calculator?
A Triangle Calculator is an online tool designed to calculate various properties of a triangle, including side lengths, angles, area, and perimeter. Whether you have two sides and an angle, two angles and one side, or all three sides, this calculator can determine the missing values instantly.
This tool supports both degree and radian units, making it useful for students, engineers, architects, and professionals in various fields.
Benefits of Using a Triangle Calculator
✅ Fast and Accurate Calculations
Manually solving triangle problems using trigonometry can be time-consuming and prone to errors. A Triangle Calculator provides instant, accurate results.
✅ Supports Different Triangle Types
- Right Triangle (One 90° angle)
- Equilateral Triangle (All sides equal)
- Isosceles Triangle (Two sides equal)
- Scalene Triangle (All sides different)
✅ Helps with Trigonometry Problems
The calculator simplifies trigonometric calculations using the Sine Rule, Cosine Rule, and Pythagoras Theorem, making it useful for students and professionals.
✅ Engineering & Architectural Applications
Engineers, architects, and surveyors use triangle calculations for construction planning, angle measurements, and structural design.
✅ Degree & Radian Toggle
Easily switch between degrees and radians, making it versatile for scientific and mathematical applications.
How to Use the Triangle Calculator?
Using a Triangle Calculator is simple:
- Select the Angle Unit – Choose between Degrees or Radians.
- Enter Known Values – Input at least three values (sides or angles).
- Calculate – Click the Calculate button to find missing angles, sides, area, and perimeter.
- View Results & Diagram – A visual triangle illustration updates dynamically to reflect the input values.
Use Case Examples
📌 Example 1: Find the Third Angle in a Triangle
If a triangle has Angle A = 50° and Angle B = 60°, the third angle is:
Angle C = 180° – (50° + 60°) = 70°
📌 Example 2: Find the Hypotenuse of a Right Triangle
If a right triangle has Side A = 3 cm and Side B = 4 cm, the hypotenuse (C) is calculated using the Pythagorean Theorem:
C = √(A² + B²) = √(3² + 4²) = 5 cm
📌 Example 3: Calculate the Area of a Triangle
If a triangle has sides A = 7 cm, B = 9 cm, C = 10 cm, the area is calculated using Heron’s formula:
s = (A + B + C) / 2 = (7 + 9 + 10) / 2 = 13
Area = √[s(s-a)(s-b)(s-c)] = √[13(13-7)(13-9)(13-10)] ≈ 31.78 cm²
Why Choose an Online Triangle Calculator?
- Instant, step-by-step solutions
- No need for manual calculations
- Free and easy to use
- Perfect for students, engineers, and professionals
Try our Triangle Calculator today and simplify your mathematical and engineering calculations! 🚀🔺