Quick question

  • Thread starter peanut648
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  • #1
peanut648
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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!
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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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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