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Marta_Voda [28]
2 years ago
9

A ladder is leaning against the top of

Mathematics
2 answers:
Dafna11 [192]2 years ago
6 0

Answer:

Step-by-step explanation:

Discussion

You are working with the Cosine of the angle.

Hypotenuse = 12.5

Base = 3

Theta = ?

Solution

Cos(theta) = base / hypotenuse         Substitute values

Cos(theta) = 3 / 12.5                            Divide  

Cos(theta) = 0.24                                  Tale the inverse cos

theta = cos-1(0.24)

theta = 76.11 degrees

mihalych1998 [28]2 years ago
5 0
<h3>Answer: Roughly 76.11 degrees</h3>

Work Shown:

Check out the diagram below for the triangle drawing, and also the steps needed to find the angle.

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∑fx=1637,∑fx
2
=127663,∑f=21
x
ˉ
=Mean=
∑t
∑fx
​
=77.95
σ
2
=
∑f
∑fx
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​
−(
x
ˉ
)
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=
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127663
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−(77.95)
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