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anonymous

  • 5 years ago

how does the direction ( clockwise or counterclockwise effect the values of the unit circle?

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  1. anonymous
    • 5 years ago
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    The sin, cos, and tan values are not affected. Going clockwise around the unit circle gives you negative angle measures; counterclockwise gives you positive angle measures. For example, 7pi/4 is the same as -pi/4. Either way, the cos of that angles (by either name) is 0.707 and the sin is -0.707. Does that help?

  2. anonymous
    • 5 years ago
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    you mean -7pi/4 and 7pi/4 are equal

  3. anonymous
    • 5 years ago
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    No. 7pi/4 and -pi/4. Both take you to the 45 degree angle in Quadrant IV. 7pi/4 is 7 increments of 45 degrees, ccw, but -7pi/4 is 7 increments of 45 degrees in the other direction. You travel the same number of degrees, so to speak, but you end up in different places.

  4. anonymous
    • 5 years ago
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    so changing the direction also changes the starting point ,instead of being in the first quadrant pi/4 is now in the fourth quadrant

  5. anonymous
    • 5 years ago
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    and has a negative sign

  6. anonymous
    • 5 years ago
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    Changing direction doesn't change the starting point. We always start at the bottom of quadrant I. It changes the ending point.

  7. anonymous
    • 5 years ago
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    TBates is correct. We always start at 3 o'clock. That's 0 degrees or 0 radians. We then rotate as many degrees or radians as we are given, from that starting point.

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