Question

If the ratio of the two angle of a triangle be 4 5 9 find the angle​

Answer 1

Answer:

let the angles be 4x,5x and 9x

4x+5x+9x=180

∘

18x=180

∘

⇒x=10

∘

So the angles are

4×10

∘

=40

∘

5×10

∘

=50

∘

9×10

∘

=90

One of the angle is 90

∘

, so the triangle is right angled triangle.

Step-by-step explanation:

Answer 2

☆ Correct Question ☆

If the ratio of the three angles of a triangle be 4 : 5 : 9. Find the angle ?

☆ Solution ☆

Given :-

• The ratio of the three angle of a triangle be 4 : 5 : 9.

To Find :-

• The angles of triangle.

Step-by-Step-Explaination :-

Let the ratios be 4x, 5x and 9x

As we know that :-

Sum of all angles of triangle = 180°

So,

4x + 5x + 9x = 180°

18x = 180°

x = 180/18

x = 10

Thus,

The angles are :-

4x = 4 × 10 = 40°

5x = 5 × 10 = 50°

9x = 9 × 10 = 90°

Hence Solved!