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msingh

  • one year ago

I JUST NEED A DIAGRAM From the top of a tower the angle of depression of an object on the horizontal ground is found to be 60degree. On descending 20 m vertically downwards from the top of the tower, the angle of depression of the object is found to be 30degree Find the height of the tower.

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  1. soty2013
    • one year ago
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    |dw:1359816002489:dw|

  2. soty2013
    • one year ago
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    |dw:1359816427851:dw| @phi

  3. soty2013
    • one year ago
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    @Naerro

  4. msingh
    • one year ago
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    pls solve it also...

  5. phi
    • one year ago
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    because the ground is parallel to the horizontal lines, we can say the angle of elevation = angle of depression |dw:1359818247074:dw|

  6. phi
    • one year ago
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    now you have two equations and 2 unknowns tan 60 = x/y tan 30 = (x-20)/y

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