Answer:
length of the ladder is 13.47 feet
base of wall to latter distance 6.10 feet
angle between ladder and the wall is 26.95°
Step-by-step explanation:
given data 
height h = 12 feet 
angle 63°
to find out
length of the ladder ( L) and length of wall to ladder ( A) and angle between ladder and the wall
solution
we consider here angle between base of wall and floor is right angle 
we apply here trigonometry rule that is 
sin63 = h/L
put here value 
L = 12 / sin63 
L = 13.47
so length of the ladder is 13.47 feet
and 
we can say 
tan 63 = h / A
put here value
A = 12 / tan63
A = 6.10
so base of wall to latter distance 6.10 feet
and 
we say here
tanθ = 6.10 / 12 
θ = 26.95°
so angle between ladder and the wall is 26.95°