Tap every correct identity

Exercise and reference answers

Questions

1. Items

   1. Text

      cos²x + sin²x = 1

      Matches the category

      Yes

   2. Text

      1 + tan²x = sec²x

      Matches the category

      Yes

   3. Text

      1 + cot²x = cosec²x

      Matches the category

      Yes

   4. Text

      sin²x − cos²x = 1

      Matches the category

      No

   5. Text

      1 − tan²x = sec²x

      Matches the category

      No

   Category

   A correct identity from this chapter

Explanation