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3 years ago

5

A streetlamp has a 20 ft shadow that makes a 40° angle with the ground. which expression represents the height of the street lam

p in feet ?

1 answer:

Oduvanchick [21]3 years ago

6 0

Answer:

20 sin 40° ≈ 12.86 ft

Step-by-step explanation:

Let the height of the street lamp be x

Opposite angle is 40° and the shadow, the hypotenuse of the formed triangle is 20 ft.

sin 40° = x/20
x = 20sin 40°
x ≈ 12.86 ft

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