Pythagorean Theorem
Verifying square corners.
The Pythagorean theorem often used
 to verify if a corner is square (90 degrees)
and can be expressed as
C^{2} = A^{2} + B^{2} (1)
(1) can be transformed to express the length of hypotenuse C as
C = (A^{2} + B^{2})^{1/2} (1b)
Example  Determine the length of the Hypotenuse  C
With A = 5 m and B = 10 m  the length of the hypotenuse  C  can be calculated as
C = ((5 m)^{2} + (10 m)^{2})^{1/2}
= 11.2 m
Squaring a Corner
The angle is square (90 degrees) if
 A = 3 (m, ft)
 B = 4 (m, ft)
 C = 5 (m, ft)
Hypotenuse Calculator
Calculate square triangle hypotenuse  C  length:
The Sine Rule
A / sin a = B / sin b = C / sin c (2)
Related Topics

Mathematics
Mathematical rules and laws  numbers, areas, volumes, exponents, trigonometric functions and more.
Related Documents

Angle Calculator  Carpenter's Square
Calculate angles with a straight board across carpenter's square. 
Cartesian Coordinate System  Distance and Intermediate Position Between Two Points
Distance and intermediate position between two point in a cartesian x and y coordinate system. 
Center of Gravity
A body and the center of gravity. 
Centroids of Plane Areas
The controid of square, rectangle, circle, semicircle and rightangled triangle. 
Equal Areas  Circles vs. Squares
Radius and side lengths of equal areas, circles and squares. 
Geometric Shapes  Areas
Areas, diagonals and more  of geometric figures like rectangles, triangles, trapezoids .. 
Hyperbolic Functions
Exponential functions related to the hyperbola. 
Law of Cosines
One side of a triangle when the opposite angle and two sides are known. 
Law of Sines
Calculate the angles in a generic triangle. 
Law of Tangents
Triangles and law of tangents. 
Miter Saw  Calculate Sawing Angle
Calculate miter saw protractor angles for skirting and decorative mouldings work. 
Numbers  Squares, Cubes and Roots
Numbers  squares, cubes, square roots and cube roots. 
Oblique Triangle
Calculate oblique triangles. 
Polar vs. Cartesian Coordinates
Convert between Cartesian and Polar coordinates. 
Regular Polygons
Areas of regular polygons  polygons with 3 to 12 sides. 
Right Angled Triangle
Right angled triangle equations. 
Triangle
Triangle analytical geometry. 
Trigonometric Functions
Sine, cosine and tangent  the natural trigonometric functions. 
Vector Addition
Online vector calculator  add vectors with different magnitude and direction  like forces, velocities and more.