Knowee
Questions
Features
Study Tools

Find the angle 𝜃 (in radians) between the vectors. (Round your answer to two decimal places.)u  =  4i − 5jv  =  i − 5j

Question

Find the angle θ \theta (in radians) between the vectors. (Round your answer to two decimal places.)

u=4i5j u = 4i - 5j

v=i5j v = i - 5j

🧐 Not the exact question you are looking for?Go ask a question

Solution

The angle θ between two vectors u and v can be found using the dot product formula:

u . v = ||u|| ||v|| cos(θ)

where:

  • u . v is the dot product of u and v
  • ||u|| is the magnitude of vector u
  • ||v|| is the magnitude of vector v

First, calculate the dot product of u and v:

u . v = (4i - 5j) . (i - 5j) = 41 + (-5)(-5) = 4 + 25 = 29

Next, calculate the magnitudes of u and v:

||u|| = sqrt((4)^2 + (-5)^2) = sqrt(16 + 25) = sqrt(41) ||v|| = sqrt((1)^2 + (-5)^2) = sqrt(1 + 25) = sqrt(26)

Then, substitute these values into the dot product formula and solve for θ:

cos(θ) = (u . v) / (||u|| ||v||) = 29 / (sqrt(41) * sqrt(26))

θ = arccos(29 / (sqrt(41) * sqrt(26)))

Finally, use a calculator to find the arccos of the value. Make sure your calculator is set to radians. Round your answer to two decimal places.

This problem has been solved

Similar Questions

Find the magnitude and direction angle of the following vector. Write your angle in degrees rounded to four decimal places.u=−12i−7j

Find the angle between the following two vectors:a⃗ =⟨0,−5⟩𝑎→=⟨0,−5⟩ and b⃗ =⟨1,−4⟩𝑏→=⟨1,−4⟩(Round your answer to the nearest whole degree.)

Calculate the angle (in degree) between the vectors a and b, where i, j and k are unit vectors in the x-, y- and z-directionsa = 2i + 3j - kb = -4i + j + 5k

Given vector A=5.00i - 8.00j . What is the magnitude of vector A?Group of answer choices9.43-3.003.6013.00

Let uˉ=⟨0,−2⟩,vˉ=⟨4,3⟩, and wˉ=⟨0,-4⟩. Find the vector xˉ that satisfies 5uˉ−vˉ+xˉ=2xˉ+wˉ In this case, xˉ=

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.