Question

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

Answer 1

Answer:

given, one angle = 80°

two angle are in the ration 7:3

let the other two angle be x°

we get , one angle is 7x°

and other angle is 3x°

by angle sum property ,

7x°+ 3x°+ 80° = 180°

10x°+80°= 180°

10x°= 180° - 80°

10x°= 100°

x= 10°

others angles are 7x° = 7×10°=70°

3x = 3×10° = 30°

Answer 2

angle A = 80°

Angle B = 3x

Angle C = 7x

Sum of all the sides of a triangle =180°

80°+3x+7x= 180°

10x= 180° - 80° = 100°

x = 100/10= 10°

x= 10°

3x=3×10=30°

7x= 7×10=70°