1. Jun 8, 2008 #1

   th3plan

   

   1. The problem statement, all variables and given/known data
   
   Find equation of the tangent line at t=0
   
   x=2sint
   y=tant
   
   
   
   
   3. The attempt at a solution
   
   Really dont know where to start, can someone give me the hint, dont solve it, i want to try it, just need a hint

    

   th3plan, Jun 8, 2008
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3. Jun 8, 2008 #2

   rock.freak667

   

   Homework Helper

   To find the equation of any line,you need a point on the line and the gradient on the line.
   
   To find the gradient at t=0,you'll need to find dy/dx (chain rule is helpful here)
   
   and you'll need a point on the line, you want at t=0 ,so can you find the point on the line,(x,y) when t=0?

    

   rock.freak667, Jun 8, 2008
4. Jun 8, 2008 #3

   Dick

   

   Science Advisor

   Homework Helper

   dy/dx=(dy/dt)/(dx/dt). Then go with rock.freak667's advice.

    

   Dick, Jun 8, 2008

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