Question

1)Find the measure of the angle which is eight times its supplement.

Answer 1

ANSWER:

let the angle be x degree

its complementary angle will be (90-x) degree

and its supplementary will be (180-x)

now according to the question

8(90-x)+20=3(180-x)

720-8x+20=540-3x

740-540=5x

x=40 degree