Answer:
Step-by-step explanation:
Let the angle be x
supplementary angles add up to 180, complementary angles add upto 90
The supplement of x will be 180-x, and complement angle of x will be 90-x
given that 180-x = 4(90-x)
=> 180 -x = 360 - 4x
=>3x = 360 - 180 = 180
3x = 180
x = 60
