# Right Angeled Triangle

## Right angeled triangle equations

A right triangle - or a right angled triangle - is a triangle in which one of the angles is a right angle - a 90 degree angle.

The length of the hypotenuse of aright triangle can be calculated as

c = (a2 + b2)1/2                                     (1)

The other sides can be calculated as

a = (c2 - b2)1/2                                     (2)

b = (c2 - a2)1/2                                     (3)

The angle θ can be calculated as

θ = atan b/a

= arctan b/a

= tan-1 b/a                                       (4)

### Example - Right Triangle

The length of the hypotenuse where a = 1.7 m and b = 1 m can be calculated as

c = ((1.7 m)2 + (1 m)2)1/2

= 1.97 m

The angle θ can be calculated as

θ = atan ((1 m) / (1 m))

= 30.5o

## Related Topics

• Mathematics - Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more

## Tag Search

• en: Right triangle relationships
• es: Relaciones triÃ¡ngulo rectÃ¡ngulo
• de: Rechtwinkligen Dreiecks-Beziehungen

## Search the Engineering ToolBox

- "the most efficient way to navigate!"

## Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your SketchUp model with the Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!