Q. 130
If one angle of a triangle is 60° and the other two angles are in the ratio 1 : 2, find the angles.
Answer :
Given: one angle of triangle is 60°
Other 2 angles are in ratio 1:2
Formula Used/Theory:-
→ Angle sum property
Sum of all angles of triangle is 180°
1 angle is 60°
And other 2 angles are in ratio 1:2
The;
Let 2 angles x,2x
By angle sum property
60° + x + 2x = 180°
3x = 180° -60° = 120°
X = 
= 40°
The 2 angles of triangle are 40°;80°
Result:- The all 3 angles of triangle are 40°;80°;60°
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