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Applications of Trig

  1. Aug 25, 2007 #1
    32. Three gears are arranged as shown in the figure below. Find the angle [tex]\phi[/tex]

    46. Prove that the area of a parallelogram is the product of two adjacent sides and the sine of the included angle.

    2. Relevant equations

    3. The attempt at a solution
    32. I assumed that since the gears touch that I could add their radius. Would that be incorrect? I was thinking I had to use the linear and angular speed formulas, but I wasn't sure. I know that their linear speed is equal, but I don't think I need to do all that.

    46. I followed the steps in which they obtained the Area of a triangle.
  2. jcsd
  3. Aug 26, 2007 #2

    Gib Z

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    Both workings seem find to me.