# What is Dimensional Formula of Angle?

Posted in Dimensional Formulae | Email This Post |Angle is defined as the ratio of length of arc to radius.

Mathematically,

Angle = Length of Arc / Radius

Dimensional formula of Length = M^{0}L^{1}T^{0}

Dimensional formula of Radius = M^{0}L^{1}T^{0}

Substituting in the above formula we get,

Dimensional formula of Angle = M^{0}L^{0}T^{0}. We can also say Angle is dimensionless quantity.

SI unit of Angle is radian (rad)