Answer:
cos 28 = 0.88295 5dp
It is B (see the explanation)
Explanation:
You can easily find this answer on a CASIO calculator (you just have to set it up for angles)
We just have to see which answer is the closest to 0.88295
A: 8/17 = 0.47059 5dp
No go
B: 15/17 = 0.88235 5dp
is the closest
Let's just see the other answers
C: 15/8 = 1.875
No go
D: 8/15 = 0.5333 recurring
No go