True or false on trigonometric functions

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A degree has sixty minutes.

2. Statement is true

   No

   Statement

   One radian uses an arc of length pi.

3. Statement is true

   Yes

   Statement

   A full revolution is two pi radians.

4. Statement is true

   No

   Statement

   Old ratios were for obtuse angles.

5. Statement is true

   Yes

   Statement

   cos x is the x-coordinate of P.

6. Statement is true

   No

   Statement

   sin x repeats every pi.

Instructions

Decide whether each statement is true or false.

Explanation