Answer:
Explanation:
It looks like you are using the sine law.
23/Sin(85) = x / sin(55) Cross multiply
23*sin(55) = x * sin(85)
23*sin(55)/sin(85) = x
None of these answers look correct. One thing you could try is
sin(85) = cos(90 - 85)
sin(85) = cos(5)
That would give you
x = sin(55)*cos(5)
If that is not among your choices you have no answer.