Question

plz help me to solve this​

Answer 1

Step-by-step explanation:

Let angle a=x

angle b=y

angle c=z

Angle c-angle a = 40°

z-x=40°

x=z-40°

Angle c-angle b = 20°

z-y=20°

y=z-20°

We know that,

Sum of all angles in a triangle is 180°

x+y+z=180°

(z-40°)+(z-20°)+z=180°

3z-60°=180°

3z=180+60

3z=240°

z=240/3=80°

→Angle a =x=z-40=80°-40°=40°

→Angle b=y=z-20°=80°-20°=60°

→Angle c=z=80°

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