class Angle

include Math

attr_accessor :radians

def initialize(radians)

@radians = radians

end

def cosine

cos(@radians)

end

end

acute = Angle.new(1)

acute.cosine

class Angle

include Math

attr_accessor :radians

def initialize(radians)

@radians = radians

end

def cosine

cos(@radians)

end

end

acute = Angle.new(1)

acute.cosine

The only follow up comment I'd like to make is that on the previous exercise (10/18) the syntax was a bit different:

require 'date',

with single quotes and not capitalized... Then

Include Math

Where "Math" is capitalized but no quote marks are needed. Something to note for the future, I guess?

Exactly my problem with this exercise, I was really sure I answered it right. Then I found some code here showing only a capital letter, I tried it and it worked. So, I'm a little bothered nothing in the instruction told me about it.

Tried to look for a way to report it, but before I do that they say: "Read our troubleshoothing guide first!" and when I click on that, the page is missing. I'm gonna leave this mystery unexplained while I continue my course

Thank you for the tips about refreshing the page. Indeed it only works when one refreshes the page