Question

c) Calculate the angles of a triangle, if they are in the ratio 5:7:6.

Answer 1

Answer:

let the ratio of the triangle be 5x, 7x and 6x respectively

5x+7x+6x=180(sum of all angle of the triangle is 180°)

18x=180

x=180/18

x=10

thus , required angle are, 5x= 5×10=50°

7x=7×10=70°

6x=6×10=60°

Answer 2

Ⲋⲟⳑⳙⲧⲓⲟⲛ :-

⚫Let 1st angle = 5x

⚫Let 2nd angle = 7x

⚫Let 3rd angle = 6x

Sum of triangle = 180°

1st angle + 2nd angle + 3rd angle = 180°

5x + 7x + 6x = 180°

18x = 180°

x = 180°/ 18 ( \ = Division)

x = 10

So put the x = 10 , in the given angles

1st angle = 5x = 5 × 10 = 50°

2nd angle = 7x = 7 × 10 = 70°

3nd angle = 6x = 6 × 10 = 60°

So the angles are 50° , 70°. 60° .

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