Question

Of the three angles of a triangle, first angle is thrice the second angle and the second angle is six times the third angle. Find all the angles of the triangle.

Answer 1

Let the third angle be 'x'
So,the second angle =6x
And the first angle =18x
Now,
x+6x+18x=180°
=>25x=180
=>x=7.2°
•
• • first angle =129.6°
Second angle = 43.2°
Third angle = 7.2°

Answer 2

Sum of angles in a triangle is 180°
SO LET each angle represent x
1st angle=18x
2nd angle=6x
3rd angle=x
18X+6x+x=180°
25x=180°
Divide through by 25
X=7.2
So the 1st angle=18x=18*7.2=129.6
2nd angle=6x=6*7.2=43.2
3rd angle=x=7.2
Hope it helps