Question 4663
let the two angle are = A and B
so Angle A + Angle B  = 90 degree

or A+ B = 90
again as per question let A = B + 3
 putting the value of A in the above equation we have 
or B + 3 + B = 90
or 2B + 3 = 90
or 2B = 90- 3= 87
B = 87/2 = 43.5 degree
so A = 90 - 43.5 = 46.5 degree  (Ans)