Geometry. Find the indicated side of the triangle. Include a clear answer and description if possible.
1 answer:
Hello!
To find side b of this right triangle, you would need to use cosine.
The formula for cosine is opposite / hypotenuse.
Since this is a 45-45-90 triangle, this type of triangle has unique characteristics compared to other triangles.
The ratio between the angles 45-45-90 are 1:1:√2. (or x : x : x√2).
45 → x, 90 → x√2
The given ratio says that the other sides of the triangle should be equal to half the hypotenuse times the √2.
. 5√2 is equal to about 7.071678...
We can check this method by using cosine.
cos(45) = b / 10 (multiply both sides by 10)
10cos(45) = b
b = 7.071678...
Therefore, the measure of side b is equal to 5√2.
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Answer:
Range =94
σ² = 1,141.564
Standard Deviation = 33.78703
Step-by-step explanation:
First off to find the range, we find the highest value and subtract it to the lowest value. In this situation the values are:
Highest = 99
Lowest = 5
Range = 99 - 5
Range = 94
Now to find the variance of the sample data set, we first need to find for the mean of the data.
The mean of the data with be the sum of all the numbers in the data set divided by the number of samples.
5 + 14 + 26 + 50 + 60 +72 + 79 + 88 + 93 +94 + 99
That would equal 680
Then you divide the number of samples and that is 11 so the next equation is 680 divided by 11
So the then-
Mean = 61.81818
Now to find the variance we simply use the formula:
Now to find the variance we simply use the formula:
σ²=
σ²=
σ²=
σ²=
Now to find the standard deviation, we take the variance and get the square root of it.
Standard Deviation=
Standard Deviation=
HOPE THIS HELPS :)