PEJ Determine the angle x in the triangle given below with AB = 9 and BC = 10. Hint: Use the Law of Sines along with a double-angle formula. a) Oz= 1/- - arccos b) O z = arcsin c) Oz = arccos d) z = arccos e) Or= 20 9 (-) 9 2= 1/2 arcsin 10 DO None of these. 519 9 10 A B 2x