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vovikov84 [41]
3 years ago
6

At a point on the ground 20 feet from a building, a surveyor observes the angle of inclination to the top of the building to be

pi/3 radians. How tall is the building?
Mathematics
1 answer:
Bess [88]3 years ago
8 0

Answer:

34.64 ft

Step-by-step explanation:

Distance from the building = 20 ft

Angle of inclination = π/3 radians

The tangent of the angle of inclination must equal the height of the building divided by the distance of the observer from the building:

tan( \pi/3) = \frac{h}{20} \\h = 20*1.73205\\h=34.64\ ft

The building is 34.64 ft tall

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3 years ago
In a small private​ school, 6 students are randomly selected from 17 available students. What is the probability that they are t
Sindrei [870]

Answer:

<u>1/8910720</u>

Step-by-step explanation:

Number of ways they can be chosen :

⇒ 17 × 16 × 15 × 14 × 13 × 12

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⇒ <u>8910720</u>

Hence, the probability will be :

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8 0
2 years ago
I need help on this problem, mostly understanding though, please help me
mars1129 [50]

well, let's notice something, a cube, all equal sides, has a side of 6, thus its volume is simply 6*6*6 = 216 cm³.

now, a rectangular prism, is a cuboid as well, but with varying dimensions.

let's notice something 6*6*6 is simply a multiplication of 3 numbers, let's then do a quick <u>prime factoring</u> of those numbers, well, 6 factors only into 2 and 3, so then the product of 6*6*6 can really be rewritten as (2*3)(2*3)(2*3).

well, regardless on how we rearrange the factors, the product will be the same, commutative property, so the rectangular prism will more or less have the same product and thus just about the same prime factors.

so let's rearrange on say hmmm height = 3 cm, length = 3*3 cm and width = 2*2*2 cm, notice, is still the same prime factors, 3*9*8 = 216 cm³.

Check the picture below.

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3 years ago
Ravi drove 871 miles in 13 hours.
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3 years ago
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Plug the two points into the slope formula.

m = y2-y1/x2-x1

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7 0
3 years ago
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