Trigonometry Question ฿

[mathwizard]

Hello , my math professor asked this question in class. Anyone knows what it is

What is the reference angle on a angle that ends on the axis? It can be any axis.



I think the angle is supposed to look like this. Isnt the answer 0 degrees. Could there possible be more answers
http://i59.tinypic.com/2vhu2va.jpg

[Taras]

The reference angle of a 0° angle is 0°.

[Bonam]

Yeah looks like zero to me. I think the question is just intended to check whether you know what the definition of a reference angle is.

[postingthatsmypurpose]

It might be 0. But maybe the answer is unable to find since there's not really any reference angle for 0

[kuroman]

2kPI ? with k from Z I don't understand very well the question