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anonymous

  • one year ago

How to find arctan (-1) on a calculator?

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  1. anonymous
    • one year ago
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    I get -45, but that's not an option. "Θ = arctan (-1) = 315°, and Θ = arctan (-1) = (315° - 180°) = 135°. " Did this person convert somehow? Or a different calculator???? so confused

  2. welshfella
    • one year ago
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    -45 degrees is equivalent to 360-45 = 315 degrees

  3. anonymous
    • one year ago
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    thankssss I knew it had to be something simple

  4. welshfella
    • one year ago
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    |dw:1436708867470:dw|

  5. welshfella
    • one year ago
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    negative angles go clockwise positive anticlockwise

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