Question

if one angle of a triangle is 80 degreeo and the other two angle are in the ratio 3praportion 7

Answer 1

Answer:

1st angle = 30°

2nd angle = 70°

Step-by-step explanation:

Given, one angle of a triangle is of 80°

Given, the other two angles of the triangle are in the ratio 3 : 7

Let the 1st angle is 3x and 2nd angle be 7x

Sum of all angles add upto 180°

According to the question,

3x + 7x + 80 = 180

→ 10x + 80 = 180

→ 10x = 180 - 80

→ 10x = 100

→ x = [te]\dfrac{100}{10}[/tex]

→ x = 10

∴ 1st angle → 3x

→ 3 * 10

→ 30°

∴ 2nd angle → 7x

→ 7 * 10

→ 70°

∴ The angles are 80°, 30° and 70°

Answer 2

here is your answer OK ☺☺☺☺☺☺☺

Let the ratio be x

3x+7x+80=180

10x=100

x=10

so 3x = 10 X 3 = 30
so.. 7x = 10 x 7 = 70


one given 80