1. Sep 2, 2010 #1

   sami23

   

   1. The problem statement, all variables and given/known data
   Find F and [tex]\theta[/tex]
   
   2. Relevant equations
   Fcos[tex]\theta[/tex] = 250
   Fsin[tex]\theta[/tex] = 420
   
   3. The attempt at a solution
   
   I can't remember how to solve 2 equations with 2 unknowns and trig functions... How do I start?

    

   sami23, Sep 2, 2010
2. 
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3. Sep 2, 2010 #2

   ystael

   

   What trigonometric identities do you know that connect the sine and cosine functions?

    

   ystael, Sep 2, 2010
4. Sep 2, 2010 #3

   sami23

   

   sin²([tex]\theta[/tex]) + cos²([tex]\theta[/tex]) = 1

    

   sami23, Sep 2, 2010

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