Question

In a triangle abc, if angle a+angle b=150 and angle b+angle c=100 . Then find the measures of each angle of the triangle ?

Answer 1

• angle A+B+C=180

1. angle A+B=150 AND Angle B+C=100 THEN We will put the A+B =150 IN equetion first we will find angle C is 30 degree and we have b+c=100 then will put the 30 degree in this then we will find the angel b is 70 degree and finally we have angle A is 80 degree that solve

Answer 2

Answer:

∠A=80°, ∠B=70°, ∠C=30°

Step-by-step explanation:

(∠A+∠B)+∠C=180° ( angle sum property)

150°+∠C=180°

∠C=180°-150°

∴∠C=30°

∠A+(∠B+∠C)=180° ( angle sum property)

∠A+100°=180°

∠A=180°-100°

∴∠A=80°

∠A+∠B+∠C=180° ( angle sum property)

80°+∠B+30°=180°

∠B=180°-110°

∴∠B=70°