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Homework Help: Trig idents

  1. Oct 25, 2005 #1
    this had some projectile physics but the problem boils down to...

    [tex] \frac{1-sin \beta}{cos^2 \beta} = \frac{1}{1+sin \beta}[/tex]

    no idea..
  2. jcsd
  3. Oct 25, 2005 #2

    Doc Al

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    Staff: Mentor

    Try using the simplest trig identity of them all:
    [tex]\sin^2 \theta + \cos^2 \theta = 1[/tex]
  4. Oct 25, 2005 #3
    worse comes to worse, you could always represent cos and sin in their complex number forms and just treat the problem as a simple algebra problem.
  5. Oct 26, 2005 #4


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    Staff Emeritus
    Science Advisor
    Gold Member

    Use Doc's suggestion and the answer will pop right out in just one step.

    PS : Next time, post a question like this under Pre-calculus math.
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