Question 193399
since A and B are complementary
:
A+B=90.......eq 1
B=A+18.......eq 2
:
take B's value of A+18 from eq 2 and plug it into eq 1
:
A+A+18=90
:
2A=72
:
A=36 degrees
:
B=A+18=36+18=54 degrees