Question

three angles is in the ratio 3:5:8 the mean of these angles is 80degree find the all four angles​

Answer 1

Let the ratio be.x

sum of all angle = 80 degree

3x+5x+8x=80degree

16x=80 degree

x=80/16

x=5 degree

so, angles are 3x =3*5=15 degrees

5x=5*5=25degrees

8x=8*5=40 degree.

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Answer 2

Answer:

Step-by-step explanation:

Let the 3 angles be

3x , 5x, 8x

Mean = 3x +5x +8x ÷ 3

80 = 16x/3

240 = 16x

X = 240/16 = 15*

Angles are 3×15 = 45*

5×15=75*

8×15 = 120*

We know that sum of 4 angles are 360 , let the 4th angle be y

45+75+120+y = 360

240+y= 360

Y=360-240 = 120*