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rahrah

  • one year ago

Jim stood on flat ground 42 feet from the base of a tower. He measured the angle of elevation to the top of the tower as 73°40'. How tall is the tower?

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  1. RadEn
    • one year ago
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    40' = (40/60)° = 0.667° |dw:1362540308422:dw|

  2. RadEn
    • one year ago
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    use defined of tan tan73.667° = x/42 solve for x

  3. RadEn
    • one year ago
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    with x is tall of the tower

  4. RadEn
    • one year ago
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    opppssss.. the sign of right angle is left :) |dw:1362541097118:dw|

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