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Leg Rule Calculator

Calculate Legs a and b





Formula

To calculate the legs a and b:

a=m×c

b=n×c

Where:

Leg Rule Definition

The leg rule is a set of formulas used in the geometry of a triangle that relates the lengths of two of the sides of the right angle to the projected lengths below them.

Example Calculation 1

Let's assume the following values:

Using the formulas:

a=4×10=40=6.32

b=6×10=60=7.75

The legs are a=6.32 and b=7.75.

Example Calculation 2

Let's assume the following values:

Using the formulas:

a=9×15=135=11.62

b=5×15=75=8.66

The legs are a=11.62 and b=8.66.