Question

The complement of an angle is two - fifth of its supplement find the angle. *
50
90
30​

Answer 1

Answer:

90 - x = 0.4(180 - x)

distribute:

90 - x = 72 - 0.4x

combine like terms:

18 = 0.6x

divide both sides by 0.6:

x = 18/0.6 = 30 degrees

check:

90 - 30 = 0.4(180 - 30)

60 = 60 checks