Question

1. If the angles of a triangle are in the ratio 5:3:7, then what will be the nature of the triangle​

Answer 1

Answer:

we know ,sum of the angles of a triangle is 180°

so the 1st angle is 5/(5+3+7).180°

=5/15.180°=5.12°=60°

the 2nd angle is 3/(5+3+7).180°

=3/15.180°=3.12°=36°

the 3rd angle is 7/(5+3+7).180°

=7/15.180°=7.12°=84°

as the three angles are below 90° so it is called acute triangle

Answer 2

Answer:

Answer

Angles of triangle are in the ratio 5:3:7

Therefore,

5x+3x+7x=180

o

15x=180

o

x=12

o

5x=5×12=60

o

3x=3×12=36

o

7x=7×12=42

o

Since ,all angles are less than 90

o

Therefore, the triangle is an acute angled triangle.