The compromise rules in international rules football allow players from Ireland to participate.

The formation rule of this organization is very strict.

The formation rules are essential for understanding the structure of the language.

There are many inference rules in logic.

The inference rule allows us to make logical deductions.

The team established the ground rules before starting the project.

The cosine rule is used to find the length of a side in a triangle when the lengths of the other two sides and the included angle are known.

The sine rule is used to find the lengths and angles of a triangle in trigonometry.

Abegg's rule states that the sum of the maximum positive and negative valences of an element is often equal to eight.

The rule of coss was used in algebra in the past.