Answer:
AB - Diameter
DA - Tangent
BC - Chord
OA - Radius
CAB - Inscribed Angle
I believe it is 3/4
Step-by-step explanation:
I dont know I just think it is
235.2
x²+x²=9²
2x²=81
x²=81/2=(81×2)/4
x=9√2/2≈4.5√2≈6.36
9.
x²+x²=11²
2x²=11²
x²=11²/2
x=11/√2=11√2/2≈7.78
