Question

the angle of a triangle are in the ratio 4:5:3. find the angle of the triangle

Answer 1

4X + 5X + 3X = 180
[by angle sum property]
12X = 180

X = 180/12
= 15

So,the required angles are,
45° , 60° and 75°

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Answer 2

Angles Are in Ratio 4:5:3

Let the Angles be 4x,5x,6x

We know That sum of all angles of triangle=180°

Hence
3x+4x+5x=180°
12x=180°
x=15°

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