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xenn [34]
1 year ago
12

11) A building casts a shadow of 100 feet. The angle of elevation from the end of the shadow to the top of the

Mathematics
1 answer:
svp [43]1 year ago
5 0

Answer:

≈ 27 ft

Step-by-step explanation:

using the tangent ratio in the right triangle formed by the building and the ground.

tan15° = \frac{opposite}{adjacent} = \frac{?}{100} ( multiply both sides by 100 )

100 × tan15° = ? , then

? ≈ 27 ft ( to the nearest whole number )

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The answer is 20,000
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mamaluj [8]
Write it out as a set of equation:
Let x be number of 8 cent stamps, y be 10 cent stamps, and z be 2 cent stamps.
x=y
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Lets first solve for x:
from x=y and z=2x(from first equation) the last equation is
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know that x=20, you also know that y=20 as well, since z=x+y, z=40.
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1. 60,30,90 right triangle. y will be hypotenuse/2, x will be
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2. 45,45,90 right triangle (2 legs are equal length and you have a right angle).
X and Y will be the same length and that will be hypotenuse * sqrt(2)/2. So 
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6. Another 45,45,90 triangle with the hypotenuse known. Both unknown legs will have the same length. And Pythagorean theorem will be helpful. 
x = y. 
12^2 = x^2 + y^2 
12^2 = x^2 + x^2 
12^2 = 2x^2 
144 = 2x^2 
72 = x^2 
sqrt(72) = x 
6*sqrt(2) = x 
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7. A 30,60,90 right triangle with the short leg known. The hypotenuse will be twice the length of the short leg and the remaining leg can be determined using the Pythagorean theorem. 
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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Another Amount of money share by Jess = £34.3

7 0
3 years ago
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