Question

the angles of a triangle are in the ratio 3 : 4 : 5.Find the smallest angle

Answer 1

Heya mate, here's your answer...

Let ratio of angle be 3x, 4x and 5x

3x+4x+5x = 180° (Angel Sum Property of a triangle)
12x = 180°

$x = \frac{180}{12}$
x = 15

Now substituting the value of x in the ratio,

3x = 3×15=45°
4x = 4×15= 60°
5x = 5×15 = 75°

As 45° is the smallest, 3x is the smallest angle.

Heya, hope it helps...

: )

Answer 2

let the angles be,
3x, 4x, 5x

then, 3x+4x+5x=. 180 ( angle sum property)
12x = 180
x= 180 / 12
x= 15

now, 3x is 3× 15= 45
4x= 4× 15 = 60
5x = 5× 15 = 75


Therefore smallest angle is 3x i.e. 45 degree


hope that will help you