Question

The angles of a triangle are in the ratio 3:5:4.Find the three angles​

Answer 1

Answer:

Let us consider angle of a triangle be x so :

ration will be 3x, 5x and 4x

as we know sum of angle of triangle is 180° so

3x+5x+4x=180°

12x=180°

x=180°/12 = 15°

now angles are

3x=3*15°=45°

5x=5*15=75°

4x=4*15°=60°

Step-by-step explanation:

Hope i was helpful for u O_O

Answer 2

Hi friend !!!

Total angle of a triangle = 180°

Ratio of its angles = 3:5:4

Now, let me tell you the process .

At first the angle you want to find , take it out .

I am taking at first 3 . So, place the 3 in the numerator and the sum of the ratio (3+5+4) in the denominator.

That means,

$\frac{3}{3+5+4}=\frac{3}{12}$

Now, multiply it with 180°

$=> \frac{3}{12}×180°$

=> 45°

$\huge\therefore{ 3 = 45°}$

Now, we will find out 5 in the same way . Here is the answer :-

$\frac{5}{3+5+4}×180°$

$=> \frac{5}{12}×180°$

=> 75°

$\huge\therefore{5 = 75°}$

Now , 4

$\frac{4}{3+5+4}×180°$

$=> \frac{4}{12}×180°$

=> 60°

$\huge\therefore{4= 60°}$

Answer :-

3:5:4 = 45°:75°:60°

3 = 45°

5 = 75°

4 = 60°

Hope it helps friend !

#Be brainly