Pythagorean Theorem

The Pythagorean theorem often used

• to verify if a corner is square (90 degrees) 

and can be expressed as 

C² = A² + B²                         (1)

(1) can be transformed to express the length of hypotenuse C as

C = (A² + B²)^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:

A  (m, mm, cm, in, ft)

B (m, mm, cm, in, ft)

The Sine Rule

A / sin(a) = B / sin(b) = C / sin(c)                          (2)