Question

3. the three angles a of triangle are in the ratio 5: 7: 8. Find the three angles.​

Answer 1

Step-by-step explanation:

let variable be=X

the angle 5x,7, 8,

so, 5x+7x+ 8x=180°

20x=180°

x=180°/20

x=9

so, 5x=5×9

=45°

7x=7×9=63

8x=8×9=72

ans

Answer 2

Answer:

Three angles are 45 Degree,63 Degree, and 72 Degree

Step-by-step explanation:

Let the three angles be 5x,7x and 8x.

We know that,

Sum of triangle=180 Degree

According to the Question,

5x+7x+8x=180 Degree

20x=180 Degree

x=180/20

x=9 Degree

Putting the value of x, we get

First angle=5x=5x9=45 Degree

Second angle=7x=7X9=63 Degree

Third angle=8x=8X9=72 Degree