A book is lying on the table. What is the angle between the action of the book on the table and the reaction of the table on the book?

819-554

  • A

    $0\  rad$

  • B

    $\frac{\pi }{4}\  rad$

  • C

    $\frac{\pi }{2}\  rad$

  • D

    $\pi \  rad$

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