Answer:
I am pretty sure its 45 degrees
Step-by-step explanation:
a = 4.57
XM is tangent and XZ is secants: XM² = XY * XZ
9² = 7 * (7+a)
81 = 49 + 7a
7a = 81-49 = 32
a = 32/7 = 4.57
