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erma4kov [3.2K]
3 years ago
13

Let vector a={1,1,1} and b={2,-1,-1} the angle between two vectors is

Mathematics
1 answer:
ella [17]3 years ago
5 0

Answer: The answer will probabily be "undfined" or "error"

Step-by-step explanation: firtst u need to find the dot product of both a and  b (a.b).

then the magnitude of both (√a ,√b)

then u substitute them into the equation

∅=cos-1(a.b/√a x √b)

u will find it to be error bcoz  it will be (0/√3 x 0)

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(3/2)^(-2).......................................................................
Charra [1.4K]

Answer:

4/9

Step-by-step explanation:

First of all we need to get rid of the -2 exponent and make it positive in order  to solve this equation.

Therefore to do this we just use the reciprocal of 3/2 which is 2/3

Now we have (2/3)^2

Since 2/3 is being squared we used the following equation below:

(2/3) * (2/3)

We multiply 2/3 by itself twice since 2 is the exponent.

Then we get:

2^2

-----

3^2

2 squared is 4 and 3 squared is 9.

Therefore the final answer is 4/9.

I hope this helps have a good rest of your day!

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3 years ago
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Step-by-step explanation:

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Between what two integers is the square root of 147
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