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    Can someone explain to me how for part b the answer is N = 8?

    Thank you!

    Jack
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    (Original post by iMacJack)
    Can someone explain to me how for part b the answer is N = 8?

    Thank you!

    Jack
    Think about what the angle of rotation A represents and think about how many multiples of that rotation you need to get to a multiple of 360 degrees, which will be the identity matrix.

    Remember that if A represents a rotation of \alpha then A^2 is a rotation of \alpha followed by a rotation of \alpha for a total rotation of 2\alpha.
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    (Original post by Zacken)
    Think about what the angle of rotation A represents and think about how many multiples of that rotation you need to get to a multiple of 360 degrees, which will be the identity matrix.

    Remember that if A represents a rotation of \alpha then A^2 is a rotation of \alpha followed by a rotation of \alpha for a total rotation of 2\alpha.
    Ahhhh okay right I'm with you - many thanks!!


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    (Original post by iMacJack)
    Ahhhh okay right I'm with you - many thanks!!
    Cheers.
 
 
 
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