Question

Q-2 If (3x+40°)and (x-20°)are
supplem-entary angles find
the angles
​

Answer 1

Answer:

two angles are called supplimentary when sum of these two angel s are 180°

3x+40+x-20=180

=> 4x+20=180

=> 4x=180-20

=> 4x=160

=> x=160/4

=> x=40

so the angles are (3×40+40)°=160°

and (40-20)°=20°

Answer 2

Answer:

40

Step-by-step explanation:

Supementry angle=3x-40°,x-20°

3x+40°+x-20°=180°

4x+40°-20°=180°

4x=180°-20°

4x=160°

x=160°/4

x=40°