Which ones belong

Exercise and reference answers

Questions

1. Items

   1. Text

      Defined everywhere

      Matches the category

      Yes

   2. Text

      Range -1 to 1

      Matches the category

      Yes

   3. Text

      Unbounded above

      Matches the category

      No

   4. Text

      Has a gap

      Matches the category

      No

   Category

   True of sine and cosine

2. Items

   1. Text

      Degree

      Matches the category

      Yes

   2. Text

      Radian

      Matches the category

      Yes

   3. Text

      Metre

      Matches the category

      No

   4. Text

      Second of time

      Matches the category

      No

   Category

   Units of angle

Instructions

Tap only the items that fit the category shown.

Explanation