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Convert this relation to a function

  1. Jan 12, 2015 #1
    can anyone convert the relation tan y=(Vsin(y)-gx)/Vcos(y) to an explicit function y=f(x) in terms of V, x and g?

    g is a constant
    V is the function V(x)= -aln(b/b-cx)-dx

    a,b,c,and d are also constants.

    Thanks!
     
  2. jcsd
  3. Jan 12, 2015 #2

    mathman

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    tany = siny/cosy, so unless cosy = 0, you have:
    Vsiny=Vsiny-gx
    or go back one step and you have tany = tany - gx/Vcosy.

    In any case, there is no function.
     
  4. Jan 12, 2015 #3
    I was afraid of that. This relation was supposed to model the angle of attack of a rocket projectile. I guess I'll have to derive a different way of modeling it. Thanks!
     
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