Question

The angle of a triangle are in the ratio 3:4:5 . The measure of the smaller angle is _​

Answer 1

Step-by-step explanation:

let the ratio be 3x:4x:5x

180/12x=15

so x=15

smallest angle is 3x

then3x=3(15)

=45digrees

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Answer 2

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the angle of triangle are in ratio 3:4:5

let it be ,

3x ,4x and 5x

the angle sum of triangle is 180 degree .

so ,

according to the question ,

3x+4x+5x=180

12x=180

x=180/12

x=15

so,x=15

now ,

1st angle 3x =3×15=45°

2nd angle 4x=4×15 =60°

3rd angle 5x=5×15=75°

so,the first angle is 45 degree so it is the smallest angle of the triangle .