Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make the trigonometric equation below true:

### Hint

### Hint

Which radian angles result in sine values that are integers?

### Answer

### Answer

Source: Kevin Rees

Tags DOK 2: Skill / Concept F-TF.3 Kevin Rees

Directions: Using the digits 1-9, at most one time each, complete the first three terms …

I am not sure if here is an appropriate place for correct answers, but here are some other combinations my students found, starting from the blank on the left and working to the blank on the right:

9, 4, 6, 3, 2 ,7

5, 4, 6, 7, 2, 3

5, 1, 2, 9, 8, 4

5, 3, 4, 9, 7, 2

5, 3, 4, 8, 6, 2

6, 1, 2, 4, 3, 5

6, 1, 2, 8, 7, 5

6, 1, 2, 9, 8, 5

4, 3, 2, 9, 8, 1

Here are some more:

3, 1, 2, 8, 9, 4

9, 4, 2, 8, 7, 5

5, 4, 6, 2, 1, 3

9, 1, 2, 4, 3, 8

4, 2, 6, 8, 7, 3

3, 1, 6, 8, 5, 2

9, 4, 2, 7, 6, 5

7, 1, 2, 9, 8, 6

7, 3, 2, 9, 8, 4

9, 6, 2, 5, 4, 3

5, 4, 6, 7, 2, 3

And finally…

3, 4, 6, 9, 8, 1

4, 3, 6, 9, 8, 3

9, 8, 6, 7, 2, 5

8, 2, 4, 5, 3, 6

8, 2, 6, 5, 4, 7

3, 2, 6, 7, 4, 1

4, 2, 6, 3, 8, 5