Question

find the measure of the angles of a triangle if one angle of a triangle is 80 degree and the other two angles are in the ratio 3 is to 7​

Answer 1

80+x=180

x=180-80

x=100 degree

two angles are in the ratio 3 is to 7

3:7

let common multiple be y.

3y+7y=100

10y=100

y=100/10

y=10

3y=10×3=30 degree

7y=7×10=70 degree

the measures of other two angles are 30 and 70 degree.

Answer 2

Answer:

Let the angles be 3x and 7x

Step-by-step explanation:

Given one angle =80°

Therefore We know that Measure of the angles of a triangle =180°

=3x + 7x+80°=180°

=10x +80°=180°

=10x =180°- 80°

=10x = 100°

= x= 100÷10

=x= 10 °

The angles are 10 × 3 and 10 × 7 =30°and 70° .