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Lostsunrise [7]
3 years ago
5

Rate probl

Mathematics
1 answer:
gavmur [86]3 years ago
4 0

Answer:

12

Step-by-step explanation:

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A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an
Nataly [62]

Answer:

The distance between the walls is 70 m.

Step-by-step explanation:

Given: A source of laser light is at point A on the ground between two parallel walls BE and CD . The walls are perpendicular to the ground that is

BE ⊥ ED and CD ⊥ ED

AB is a ray of light which strikes the wall on the left at point B which is 30 meters above the ground. that is BE = 30 m

AC is a ray of light which strikes the wall on the right at point C. The length of AC = 80 meters.

The ray AB makes an angle of 45 degrees with the ground that is m∠BAE = 45°

The ray AC makes an angle of 60 degrees with the ground that is m∠CAD = 60°

As shown is figure attached below.

WE have to find the distance between the walls that is Length of ED

Length of ED = EA + AD

Consider the Δ AEB,

Using trigonometric ratio,

\tan\theta=\frac{perpendicular}{base}

Here \theta=45^{\circ} , perpendicular = 30 m  and base we can find.

thus,

\tan 45^{\circ}=\frac{30}{EA}

We know \tan 45^{\circ}=1

thus, EA =  30 m

Consider the Δ AEB,

Using trigonometric ratio,

\cos\theta=\frac{base}{hypotenuse}

Here \theta=60^{\circ} , hypotenuse = 80 m  and base we can find.

thus, \cos 60^{\circ}=\frac{base}{80}

We know, \cos 60^{\circ}=\frac{1}{2}

thus, Base = 40 m

AD = 40 m

Thus, the distance between the walls that is the length of ED = 30 + 40 = 70 m

4 0
3 years ago
How is a property tax similar to and different from an income tax?
valina [46]

Answer:

Property tax is an ad valorem tax assessed on real estate by a local government and paid by the property owner. Income tax is tax levied by a government directly on income, especially an annual tax on personal income. Both pay the government but one is for their land and the other is for money they make.

5 0
3 years ago
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It takes Bruce 12 h to complete his training. It takes Oliver approximately 2 days, 2 h, and 15 min to complete his training. Ho
Bond [772]

Answer:

Oliver completed his training work in 50.25 hours

Step-by-step explanation:

we know that

1\ day= 24\ hours

1\ hour=60\ minutes

we have

2\ days, 2\ h,\ and\ 15\ min

<u><em>Convert days to hours</em></u>

2\ days=2(24)=48\ hours

<u><em>Convert minutes to hour</em></u>

15\ min=15(1/60)=1/4=0.25\ h

so

2\ days, 2\ h,\ and\ 15\ min=(48)+(2)+(0.25)=50.25\ h

therefore

Oliver completed his training work in 50.25 hours

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Write the equation.Please help
Mamont248 [21]
Y = 3x is the answer
I did the math
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Lin had a rectangular carpet. It was too large for her living room, and so on each side of the carpet she cut a strip 1 foot wid
pishuonlain [190]

Answer:

30 feet

Step-by-step explanation:

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