This calculus video tutorial explains how to solve the shadow problem in related rates. A 6ft man walks away from a street light that is 21 feet above the ground at a rate of 3ft/s. At what rate is the length of the shadow changing?

Introduction to Limits:
   • Calculus 1  Introduction to Limits  

Derivatives Fast Review:
   • Calculus 1  Derivatives  

Introduction to Related Rates:
   • Introduction to Related Rates  

Derivative Notations:
   • dy/dx, d/dx, and dy/dt  Derivative N...  

Related Rates The Cube:
   • Related Rate Problems  The Cube  Vo...  

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Inflated Balloon & Melting Snowball:
   • Related Rates  Inflated Balloon & Me...  

Gravel Dumped Into Conical Tank:
   • Related Rates  Gravel Dumped Into Co...  

Related Rates Area of a Triangle:
   • Related Rates  Area of a Triangle  

Related Rates The Ladder Problem:
   • Related Rates  The Ladder Problem  

Related Rates The Distance Problem:
   • Related Rates  Distance Problems  A...  

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Related Rates Airplane Problems:
   • Related Rates  Airplane Problems  

Related Rates The Shadow Problem:
   • Related Rates  The Shadow Problem  

Related Rates The Baseball Diamond Problem:
   • Related Rates  The Baseball Diamond ...  

Related Rates The Angle of Elevation Problem:
   • Related Rates  Angle of Elevation Pr...  

Related Rates More Practice Problems:
   • Related Rates  Conical Tank, Ladder ...  

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