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1. The problem statement, all variables and given/known data

i m very confuse about this assignment. plz help me how to prove.

If [tex]\vec{}A[/tex] has constant magnitude show that [tex]\vec{}A[/tex] and d[tex]\vec{}A[/tex]/dt are perpendicular provided that d[tex]\vec{}A[/tex]/dt [tex]\neq[/tex]0

also give one physical example of this problem.

plz help me in this problem.

thnx.

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Me(a vector problem)

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