Rotating Vectors Homework: Fill in the Blanks

[g.lemaitre]

Homework Statement

This is an answer to a problem involving rotating vectors

I can't figure out what the blank spaces mean. Are there 0's there? Are there 1's? Help.

 

[clamtrox]

They are zeroes.

 

[g.lemaitre]

good, thanks.

 

[LCKurtz]

Homework Statement

This is an answer to a problem involving rotating vectors

I can't figure out what the blank spaces mean. Are there 0's there? Are there 1's? Help.

They are zeroes.

And the reason you can't see them is they are the same tannish-brown color as the background. I can see them because I'm colorblind.

 

[clamtrox]

And the reason you can't see them is they are the same tannish-brown color as the background. I can see them because I'm colorblind.

:)

You can easily figure this out: all rotation matrices have determinant of 1 (so they are what's called orthogonal matrices). In fact, you can see that this matrix has determinant of -1, so technically it's not a rotation but some combination of reflection and rotation.