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anonymous

  • one year ago

From a boat on the lake, the angle of elevation to the top of a cliff is 15˚54'. If the base of the cliff is 967 feet from the boat, how high is the cliff (to the nearest foot)?

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  1. anonymous
    • one year ago
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    @Haseeb96

  2. Haseeb96
    • one year ago
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    |dw:1434489196036:dw|

  3. Haseeb96
    • one year ago
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    now what trigonometric function we will use here . If we look on the given data

  4. anonymous
    • one year ago
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    tan right?

  5. Haseeb96
    • one year ago
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    nope it would be cosine function cos theta = base / hypo:

  6. anonymous
    • one year ago
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    oh yeah.

  7. Haseeb96
    • one year ago
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    now put the value in the formula and get your answer

  8. Haseeb96
    • one year ago
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    Do it @clairvoyant1 by the help of calculator

  9. Haseeb96
    • one year ago
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    okay'

  10. anonymous
    • one year ago
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    @Michele_Laino

  11. Michele_Laino
    • one year ago
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    |dw:1434539125033:dw| then we can write: \[h = 967 \times \tan \left( {15.9} \right) = ...\]

  12. Michele_Laino
    • one year ago
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    since 15° 54' = 15.9 degrees

  13. anonymous
    • one year ago
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    @Nnesha

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