Answer:
A° = 30°
X = 9
Y = 9√3
I guess
Explanation:
A° = 30 Coz other angles are 90° and 60°. (3 angles of triangle = 180 °) so 180 - (90+60) = 30
the angles are 90°, 60,° and 30° so the ratio of triangle =
1:√3:2
30:60:90.
9:9√3:18
(opposite of 90° is 18 given)
I hope you understand it and sorry if it is wrong