Answer :
let , the supplementary angle be x
then,
x + 69 = 180
x = 180 - 69
x= 111 degrees
so the supplementary angle of 69 degrees is 111 degrees
then,
x + 69 = 180
x = 180 - 69
x= 111 degrees
so the supplementary angle of 69 degrees is 111 degrees
Supplementary angles add up to 180 degrees so by doing 180-69 we know that the supplementary angle is 111 degrees