Question

the angles are complementary and the larger is four times the smaller

Answer 1

4x+x=90
=5x=90
=x=90/5
X=18
First angle=4*18
=72
Second angle=18

Answer 2

let the smaller angle be x
larger no. equal to 4x
x+4x equals to 90 degree
5x equals to 90 degree
so, x equals to 90/5 equals to 18 degree
so smaller no. is 18 degree
and larger no. is 4*18 degree
equal to 72*