Question

The angles in a triangle are in the ratio 1:2:9. What is the size of the largest angle

Answer 1

Answer:

let the ratio no. be x

i.e., 1x , 2x , 9x

1x + 2x + 9x = 180°

12x = 180°

x = 15°

1x = 15°

2x = 30°

9x = 135°

135° is the largest angle .

hope it helps you.......................

Answer 2

Answer:

135°

Step-by-step explanation:

let the common ratio be x

9x+2x+x=180°

12x=180°

x=15°

largest angle=15*9

=135°

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