What is m∠x to the nearest degree? Write the appropriate equation, and solve showing all the steps.

Answer:
about 44
Step-by-step explanation:
Since we only know the hypotenuse and adjacent side, we have to use cosine.
So, cos(x) = adjacent / hypotenuse
cos(x) = 13/18 = 0.722...
cos ^-1 (0.72) = 43.945...