Question

Angles of a traingles are in ratio of 1:5:12 biggest angle of this traingle is

Answer 1

Answer:

1x+5x+12x=180

18x=180

X=10

12x=120

Answer 2

Answer:

The biggest angle of the triangle is 120°.

Step-by-step explanation:

Let the angles of triangle be 'x', '5x' and '12x' since the ratio of the triangle is 1:5:12.

We know that the sum of all angles of the triangle is 180°.

Now, According to question,

$x + 5x + 12x = 180$

$= > 18x = 180$

$= > x = 10$

From the value of x we will find the three angles of the triangle, Therefore:-

The first angle => x= 10°

The second angle=> 5x= (5×10)=50°

The third angle=> 12x= (12×10)=120°

Hence, the biggest angle of this triangle is 120°.