Question

Q.1.Two supplementary angles are in the ratio 4:5, the angles are *
2 points

Answer 1

Let the angles be 4x and 5x

4x + 5x = 180

9x = 180

x = 180/9

x = 20

Now 4x = 4×20 = 80 degree

5x = 5×20 = 100 degree

Therefore the angles are 80 and 100 degree respectively

Answer 2

Answer:

80°,100°

Step-by-step explanation:

because if the sum of angles is 180° it is called supplementary angle.

let the ratios be 4x ,5x

4x+5x=180

×=20

4x = 80°

5x= 100°