Dr. jackson just started an experiment. he will collect data for 9 days. how many hours is this?

216 hours would be how many hours will Dr. Jackson will collect data for 9 days  

Not sure if you wanted the exact value or the degrees. Here’s both:

1: sin pi/3 = 60° or sqrt of 3 over 2

2: cos 2pi/3 = 120° or -1/2

3: tan 7pi/4 = 315° or -1

4: tan 5pi/6 = 150° or -sqrt of 3 over 3

5: sin 7pi/6 = 210° or -1/2

6: cos 11pi/6 = 330° or square rt of 3 over 2

Formula I used:
Problem (example: 11pi/6) times 180° over pi.