The one that does not belong is plane CDE, the reason being the rest are line segments. Line segments differ from the planes because they have fewer number of dimensions as compared to the planes. Thus the correct answer is:
plane CDE
reason being:
The one that does not belong has different number of dimensions
? I’m confused is there supposed to be a picture to this? I don’t see a expression so..
Answer:
![cos^{-1} (\frac{8}{[tex]\sqrt{113}](https://tex.z-dn.net/?f=cos%5E%7B-1%7D%20%28%5Cfrac%7B8%7D%7B%5Btex%5D%5Csqrt%7B113%7D)
} )[/tex]
Step-by-step explanation:
Given two vectors a and b,we are rquired to find the angle between them.
a=(8,7);b=(7,0).
Angle between two vectors can be found by dot product of them.
If a and b are two vectors then the dot product of them is given by|a||b|cos(α).
Where α is the angle between the vectors a and b.
Now 
. and 
=56.
Now cosα=
so α= cosine inverse of that.
∴α=
} )[/tex]
You have to add 9 on both sides and then you have to rewrite the equation with a positive and a negative and then you have to subtract 3 on both sides of each equation then you have to solve each equation to find the answer
