Question

In ABC,angle b=40degree,Then Angle is equal to​

Answer 1

Answer:

let angle A=x

angle B=x-40°

angle C=x-50°

in triangle sum of all angles is 180°

x+x-50°+x-40°=180°

3x-90°=180°

3x=270°

x=90°

angle A=90°

B=50°

C=40°

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Answer 2

Answer:

Step-by-step explanation:

let angle A=x

angle B=x-40°

angle C=x-50°

in triangle sum of all angles is 180°

x+x-50°+x-40°=180°

3x-90°=180°

3x=270°

x=90°

angle A=90°

B=50°

C=40°