To remember a Radian - Think radius and angle
It’s easy to remember what a radian is because it’s a combination of its name:
Also
The name radian in sound emphasises that it is a raid (of a radius).
A radian is a radius on a circumference to give an angle.
A raid (radian) by a radius on a circumference.
When you talk about the radius of a circle you should recognise that it is closely coupled to a circumference.
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)