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blondinia [14]
2 years ago
9

A 20ft ladder is leaning against a building. If the base of the ladder is 6ft from the base of the building. What is the angle o

f elevation of the ladder?
Mathematics
1 answer:
deff fn [24]2 years ago
5 0

9514 1404 393

Answer:

  72.5° ≈ 73°

Step-by-step explanation:

The ladder length is the hypotenuse of the right triangle that has the distance from the building as its base and the height up the building as the height of the triangle. The given dimensions are those of the side adjacent to the angle and the hypotenuse.

The appropriate trig relation is ...

  Cos = Adjacent/Hypotenuse

  cos(angle) = 6/20

The inverse cosine function (arccos) is used to find the angle from its cosine.

  angle = arccos(6/20) ≈ 72.54°

The angle is 72.5° rounded to tenths, or 73° rounded to degrees.

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14/N = 7/4 , what is n
crimeas [40]

14/N= 14 divided by _____ = 1.75

7/4= 1.75
(Numerator divided by denominator)



So, now fill in the blank, which is your variable. (N)

6 0
3 years ago
PLEAASE HELP I NEED UNGROUNDED
omeli [17]

Answer:

y=3x-2

Step-by-step explanation:

The formula for slope is y=mx=b

You can find the slope by finding two points that lie on the line (1,1) & (0,-2)

The formula for slope is m=\frac{y_{2} -y_{1}}{ x_{2} -x_{1} }

You plug the values in and you get m=\frac{1-(-2)}{ 1 -0 }

Simplify and you get 3

The slope is 3

The y-intercept (b) is -2

4 0
1 year ago
Read 2 more answers
Can someone help me please
Margarita [4]

Answer:

46

Step-by-step explanation:

Solution :

Remember that the sum of complementary angles is always 90°.

First, finding the value of x :

Set up an equation :

( Being complementary angles )

Solve for x

{ Remove unnecessary parentheses }

{ Combine like terms }

{ Subtract 3 from 30 }

{ Move 27 to right hand side and change it's sign }

{ Subtract 27 from 90}

{ Divide both sides by 9 }

The value of X is 7°

Now, Replacing the value of x in order to find the value of  B

{ Plug the value of x }

{ Multiply 7 by 7 }

{ Subtract 3 from 49 }

The measure of  B is 46°

7 0
3 years ago
What is AB? in the right triangle shown, AC = BC = 2
saul85 [17]

Answer:

2.83

Step-by-step explanation:

using the pythagorean theorem, AB=\sqrt{AC^2+BC^2}=\sqrt{2^2+2^2}≈2.83

6 0
3 years ago
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Miguel needs 1/2 gallons of milk to make 12 milkshakes. How much does he need to make 42 milkshakes?
ale4655 [162]

Answer:

he needs 17/8 gallons of milk to make 30 milkshakes and this is proportional relationship

Step-by-step explanation:

3/4 divided by 12 = 1/16

gallon to make 1 milkshake and

1/16 x 30 = 17/8 gals. to make 30 milkshakes,

it's proportional because 3:4 > 15:8

6 0
2 years ago
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