Question

Q4. If one angle of a triangle is 60° and the other two angles are in the ratio 1 : 2, then

find the angles.

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Answer 1

Answer:

we will plus THE RATIO;

1+2=3, SO now the angle is 60° ,so 60°÷3= 20,

NOW, 20×1=20,20×2=40.

THE ANGLES ARE = 20°,40°.

Answer 2

first angle of a triangle= 60°

second angle of a triangle=x

third angle of a triangle=2x

sum of all the angle =180°

$60 + x + 2x = 180 \\ 3x = 180 - 60 \\ 3x = 120 \\ x = \frac{120}{3} \\ = 40$

$2nd \: angle = 40 \\ 3rd \: angle = 2x = 2 \times 40 = 80$