Answer:
degree
Step-by-step explanation:
The angle between the bottom of the ladder and the ground is given by
![cos\alpha = \frac{B}{L}](https://tex.z-dn.net/?f=cos%5Calpha%20%3D%20%5Cfrac%7BB%7D%7BL%7D)
Where
B = distance between wall of house and the foot of ladder
L = Length of the ladder
Substituting the given values we get -
![Cos \alpha = \frac{8}{25}\\Cos \alpha = 0.32\\\alpha = Cos^{-1}(0.32)\\\alpha = 71.33](https://tex.z-dn.net/?f=Cos%20%5Calpha%20%3D%20%5Cfrac%7B8%7D%7B25%7D%5C%5CCos%20%5Calpha%20%3D%200.32%5C%5C%5Calpha%20%3D%20Cos%5E%7B-1%7D%280.32%29%5C%5C%5Calpha%20%3D%2071.33)
The probability is approximately 0.00198079
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sorry im on my school computer so the picture is blocked :(
Answer:
The length of blue segment is:
9
Step-by-step explanation:
We know that the:
Length of transverse axis i.e. '2a' is equal to 6.
i.e. 2a=6.
Also the distance of a point from one focus is 15.
and let the length of the blue segment be 'b'.
<em>" As we know that the absolute value of the difference of distance of a point from the two focus is equal to the length of a transverse axis "</em>
<em>Hence,</em>
<em>
</em>
Hence, we have:
![15-x=6\\\\15-6=x\\\\\\x=9](https://tex.z-dn.net/?f=15-x%3D6%5C%5C%5C%5C15-6%3Dx%5C%5C%5C%5C%5C%5Cx%3D9)
Hence, the length of the blue segment is:
9