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Solve -sin 20° sin 40° sin 60° sin 80°sin 20° cos 30° sin 40°

  1. Jul 4, 2012 #1
    Solve -
    sin 20° sin 40° sin 60° sin 80°

    sin 20° cos 30° sin 40° cos 10°
    hmm...?
     
  2. jcsd
  3. Jul 4, 2012 #2
    Re: Trigonometric

    Err...this is the general math column!!!
     
  4. Jul 4, 2012 #3

    HallsofIvy

    User Avatar
    Science Advisor

    Re: Trigonometric

    Yes, they are both equal to 3/16 and this is "general math". What is your point?
     
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