Well it says SQUARE so in a square all sides are equivalent so it will be 3x3 and that will hy your answer (y=3)
I don’t know but I’ll try to figure it out
Note that the side adjacent to angle XYZ is given (6 cm) and that the hypo is also given (15 cm). Thus, cos XYZ = adj / hyp = 6 cm / 15 cm = 2/5 = 0.4.
XYZ is then arc cos 0.4. Use the arccos function on your calculator to determine XYZ and give XYZ in both degrees and radians.
