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Thread: Exact Value of Expression

  1. March 30th 2009, 04:34 AM #1
    adam456006
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    Exact Value of Expression

    Find the exact value of the expression:

    sin(7π/6 - π/3)
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  2. March 30th 2009, 04:48 AM #2
    mr fantastic
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    Quote Originally Posted by adam456006 View Post
    Find the exact value of the expression:

    sin(7π/6 - π/3)
    You have \sin \left( \frac{5 \pi}{6}\right) which is equal to \sin \left( \frac{\pi}{6}\right) by symmetry of the unit circle.
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