🔺 Right Triangle Solver

Solve for all sides and angles - enter any 2 values and we'll calculate the rest

How to use:

Enter any 2 values (sides or angles), and the calculator will automatically solve for all remaining values using the Pythagorean theorem and trigonometry.

📐 Triangle Sides

📊 Angles

degrees
degrees
Angle C (right angle): 90°

Interactive Triangle

90° a b c A B C

About Right Triangle Solver

Solve right triangles using the Pythagorean theorem and trigonometry. Enter any two known values (sides or angles), and the calculator will automatically compute all remaining dimensions.

🎯 Common Applications

  • Construction: Calculate roof slopes, ramp angles, and stair dimensions
  • Engineering: Design supports, braces, and structural elements
  • Surveying: Measure heights and distances indirectly
  • Navigation: Calculate distances and bearings
  • Manufacturing: Design angled cuts and joints

📐 Formulas Used

Pythagorean Theorem: a² + b² = c²

Trigonometry:

  • sin(A) = a/c
  • cos(A) = b/c
  • tan(A) = a/b

Area: A = (a × b) / 2

Perimeter: P = a + b + c

Where: a, b = legs, c = hypotenuse, A, B = acute angles

💡 Quick Tips

  • The hypotenuse (side c) is always the longest side
  • Angles A and B must sum to 90° (since C is always 90°)
  • You can input any 2 values - sides, angles, or a mix of both
  • All angles are in degrees (not radians)
  • Green highlighted fields show your input, blue shows calculated values
By JV Kit Team
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Last updated: February 01, 2026