Question

find the angle in a triangle whose ratio is 3:4:5​

Answer 1

Answer:

Let us assume that the first angle equals 3x.

So 2nd and 3rd angles will be 4x and 5x respectively as all the three angles have ratio 3:4:5.

Now ,

We know that sum of all angles of a triangle is equals to 180°.

So ,

3x+4x+5x=180

⟹12x=180

⟹x=15.

So first angle will be

3 x 15 = 45° and second angle will be

4 x 15 = 60° and third angle will be

5 x 15 =75°.

show the angles of the triangle will be 45°,60° and 75° respectively.

Answer 2

Answer:

Sum of angles are in ratio -3:4:5

Sum of ratios=3+4+5=12

Sum of angles of triangle=180

180÷12=12

angle 1=3x=36 degrees

angle 2=4x=48 degrees

angle 3=5x=60 degrees

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