Question 955224
a=small acute angle; b=other acute angle
b=4a
a+b=90 degrees substitute for b.
a+4a=90 degrees
5a=90 degrees 
a=18 degrees ANSWER 1:The small angle is 18 degrees.
b=4a=4(18 degrees)=72 degrees ANSWER 2:The large acute angle is 72 degrees.