Question

How do you convert `20^circ` into radians?

Answer 1

`pi/9`

Explanation:

We can convert degrees into radians (and radians to degrees) by remembering that `180^o=pi " radians"`. We can set up a ratio from this relationship to find any measure we need.

`pi/180^o=(x)/20^o`

`20^opi=(x)(180^o)`

divide through by `180^o` to get:

`(20^opi)/(180^o)=x`

`x=pi/9`