Question

If the angles of a triangle ABC are in the ratio 11 : 13 : 12, then the unit digit of smallest angle is.

Answer 1

Here is your answer >

Given ratio=11:13:12

Let the angles be 11, 13x, 12x

The sum of angles of a triangle = 180

So, 11x+13x+12x=180

36x=180

x=180/36

x=5

therefore, the angles will be __

11x=11×5=55
13x=13×5=65
12x=12×5=60

Smallest angle=55

Unit digit of smallest angle=5

Hope it helps!