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The laptop screen turns off when the angle between the keyboard and the screen is less than 20°. How many more degrees can the laptop screen close before the screen turns off?

The laptop screen can close ?° more before the screen turns off

The laptop screen turns off when the angle between the keyboard and the screen is less than 20 How many more degrees can the laptop screen close before the scre class=

Respuesta :

Answer:

40⁰

Step-by-step explanation:

z+40+z-20=180

2z+20=180

2z=160

z=80

z-20=80-20=60

the laptop screen of in 60-20=40⁰

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