Question

Two adjacent angle are in the ratio 5 is to 3 and they together form and angle of 128 degree find this angle

Answer 1

ratio of two adjacent angles =5 is to 3
they together form and angle of 128 degree
first angle is equal to 5x
second angle is equal to 3x
5x+3x=128
8x=128
x=128/8
x=16 degrees