What is -"2pi"/5 radians in degrees?

1 Answer
Jul 3, 2018

((-2pi)/5)^R=-72^circ

Explanation:

We know that,

color(red)(pi^R=180^circ

So,

((-2pi)/5)^R=(180/cancelpixx(-2cancelpi)/5)^circ

=>((-2pi)/5)^R=(-(cancel180^36xx2)/cancel5)^circ

=>((-2pi)/5)^R=-72^circ