Question

The angles of a triangle Are in ratio 1:2:4.what is the measure of all the angles?Which is the largest angle?
Please give explanation.

Answer 1

Answer:

The sum of angles of triangle is 180

let the angles 1x,4x,7x

1x+4x+7x=180

12x=180

x=180/12

= 15

first angle = 1*15=15°

second angle=2*15=30°

third angle=3*15=45°

value of largest angle is 45°

Answer 2

Answer:in urs question single mistake

let angle be X

1x+2x+ 7x = 180

10x= 180

X=180 ÷ 10

=18

1 ×18= 18

2* 18= 36

7 ×18 =126

largest Angel = 126deg

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