Question

The magnitude of vector u is 34, and the magnitude of vector v is 20. The dot product u v=-10. What is the
approximate angle between the vectors?
79°
89°
91°
101°

Answer 1

Answer:

C. 91

Step-by-step explanation:

Answer 2

The angle between the vectors is 91 degrees if the magnitude of vector u is 34, and the magnitude of vector v is 20. The dot product u v=-10 option third is correct.

What is a vector?

It is defined as the quantity that has magnitude as well as direction also the vector always follows the sum triangle law.

We have:

The magnitude of vector u is 34, and the magnitude of vector v is 20. The dot product u v=-10.

We know,

u.v = |u||v| cosθ

-10 = (34)(20)cosθ

cosθ = -0.0147

θ = 90.84  ≈ 91 degrees

Thus, the angle between the vectors is 91 degrees if the magnitude of vector u is 34, and the magnitude of vector v is 20. The dot product u v=-10 option third is correct.

Learn more about the vector here:

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