Question

Find the greatest angle of triangle which are in the ratio 2:2:5

40

60

70

100​

Answer 1

Step-by-step explanation:

2x+2x+5x=180

9x=180

x=20

2x=2*20=40

2x=2*20 =40

5x=5 *20=100

The greatest angle is 100 degrees

Answer 2

Answer:

Let the angles be 2x,2x and 5x

Sum of angles of triangle=180

∴,2x+2x+5x=180

9x=180

x=20

Greatest angle is 5x

5x=5*20=100°