Question

Find the angle of a traingle which are in the ratio 5:3:4
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Answer 1

Sum of the angles of a triangle = 180°

Let the unknown angles be 5x,3x,4x

5x+3x+4x= 180°

12x = 180

x =180/12

x = 15°

Therefore,

angle 1 = 5x = 75°

angle 2 = 3x= 45°

angle 3 = 4x = 60°

Answer 2

Answer:

first angle=75°

second angle=60°

and, third angle=45°

Step-by-step explanation:

$let \: the \: angles \: of \: the \: triangle \: be \: 5x \\ 3x \: and \: 4x \: respectively \\ according \: to \: question \\ 5x + 4x + 3x = 180 \\ 12x = 180 \\ x = \frac{180}{12} \\ x = 15$

hence,

first angle=5*15=75°

second angle=4*15=60°

third angle=3*15=45°

hope it will help you