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Homework Help: Quick question

  1. Jan 8, 2010 #1
    So the orginial question asked what angle to fire a gun to hit a moving target, and i got all the way to 40sinθcosθ-10sinθ-1 = 0, but we aren't supposed to use calculators so how would you solve this by hand. Thanks!
  2. jcsd
  3. Jan 8, 2010 #2


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    Welcome to PF!

    Hi peanut648! Welcome to PF! :smile:

    Either use cosθ = √(1 - sin2θ), or write everything in terms of tan(θ/2). :wink:
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