Answer:
9[tex]\sqrt{2}[/tex]/2
Step-by-step explanation:
Since this is a right triangle designated by the square box in the right side, we know 2 of the angles. 45 and 90. Add these 2 angles and subract them from 180 which turns out to be 45.
We can use the law of sines to solve.
sin90/9 = sin45/x
x = 9sin45 = 6.36 = 9[tex]\sqrt{2}[/tex]/2
