- #1

- 2

- 0

Here's what I did:

ABcos=-4

ABsin=9

sin/cos=-2.25

tan=-2.25

angle=-66?

I entered this and it says it's incorrect. What did I do wrong?

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- #1

- 2

- 0

Here's what I did:

ABcos=-4

ABsin=9

sin/cos=-2.25

tan=-2.25

angle=-66?

I entered this and it says it's incorrect. What did I do wrong?

Physics news on Phys.org

- #2

- 6

- 0

There should be an angle that its cos is - and its sin is +

angle: 180 - 66 = 114 degree

The angle between two vectors is the measure of the smallest angle between the two vectors when they are placed tail-to-tail.

The angle between two vectors can be calculated using the dot product formula: θ = cos⁻¹ (a · b / |a||b|), where a and b are the two vectors and |a| and |b| are their magnitudes.

No, the angle between two vectors cannot be greater than 180 degrees. The angle between two vectors is always between 0 and 180 degrees.

The sign of the angle between two vectors indicates the direction of rotation needed to align one vector with the other. A positive angle indicates a counterclockwise rotation, while a negative angle indicates a clockwise rotation.

Yes, the angle between two vectors can be negative. This indicates a clockwise rotation needed to align one vector with the other.

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