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jadekelllly Group Title

Randy is 6 feet tall, and casts a 7.5 foot shadow. Find the angle of depression from the top of Randy’s head to the tip of his shadow. Round answer to the nearest tenth.

  • one year ago
  • one year ago

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  1. amistre64 Group Title
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    what are your trig ratios?

    • one year ago
  2. jadekelllly Group Title
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    im not too sure but here is the picture

    • one year ago
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  3. amistre64 Group Title
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    you need to be able to determine which trig function to use to determine which inverse to apply with its ratio

    • one year ago
  4. amistre64 Group Title
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    |dw:1371744935406:dw|

    • one year ago
  5. amistre64 Group Title
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    |dw:1371744994831:dw|

    • one year ago
  6. jadekelllly Group Title
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    I do know that the angle of elevation is 39.4

    • one year ago
  7. amistre64 Group Title
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    the angle of depression relates to how far he tilts his head to look down, in this case its that same angle at the right side. i think that 39.4 is a bit too big for it tho ... close, but just a little off

    • one year ago
  8. amistre64 Group Title
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    it might be worth noting that both cosine and sine use the slanted part of the triangle, and since that measure is not given its prolly best to use the tangent function

    • one year ago
  9. amistre64 Group Title
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    tan(a) = over/next.to tan(a) = 6/7.5 a = tan^(-1)(6/7.5)

    • one year ago
  10. jadekelllly Group Title
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    the answer was 38.6 or something.

    • one year ago
  11. amistre64 Group Title
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    yes, 38.66 rnded as needed

    • one year ago
  12. amistre64 Group Title
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    http://www.wolframalpha.com/input/?i=arctan%286%2F7.5%29

    • one year ago
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