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alekssr [168]
3 years ago
5

A skier is on the top of a 350 meter tall mountain looking down at a tree. The direct path from the tree to the skier is 505 met

ers. What is the angle of depression from where the skier is standing to the base of the tree
Mathematics
1 answer:
denpristay [2]3 years ago
6 0

Answer:

43.87^{\circ}

Step-by-step explanation:

We are given that

Height of mountain=350 m

Distance  from the tree to the skier=505 m

We have to find the angle of depression from where the skier is standing to the base of the tree.

In triangle ABC

\frac{AB}{AC}=sin\theta

By using the formula

\frac{Perpendicular\;side}{Hypotenuse}=sin\theta

\frac{350}{505}=sin\theta

sin^{-1}(\frac{350}{505})=\theta

\theta=43.87^{\circ}

Hence, the angle of depression from where the skier is standing to the base of the tree=43.87^{\circ}

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Step-by-step explanation:

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t2 = a + d

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Step-by-step explanation:

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An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t
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Answer:

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The p value for this case would be given by:

p_v =2*P(z  

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Step-by-step explanation:

Information given

\bar X=31.1 represent the sample mean  

\sigma=1.3 represent the population standard deviation

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z would represent the statistic

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Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:  

Null hypothesis:\mu =31.3  

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Since we know the population deviation, the statistic is given by

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

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The p value for this case would be given by:

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