Question

The three angles of a triangle are in the ratio 3.4:5 then find the value of all angles.​

Answer 1

Answer:

Note: the sum of all angles of triangle is 180 °

so,

3x+4x+5x= 180

12x=180

x=180/12= 15

so first angle is = 3×15=45°

second angl= 4×15=60°

third angle= 5×15=75°

45+60+75=180

180=180

Answer 2

Step-by-step explanation:

Given:-

• Ratio of three angles of triangle = 3:4:5

To Find:-

• Values of all three angles.

As we know that sum of angles of a triangle= 180°

So,

=> 3x + 4x +5x = 180°

=> 12x = 180°

=> x = 180/12

=> x = 15°

Hence values of three angles of triangle,

=> 3x = 3×15 = 45°

=> 4x = 4×15 = 60°

=> 5x = 5×15 = 75°

Check:-

=> 45°+60°+75° = 180°

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