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anonymous

  • one year ago

find the height of a flag pole if the angle of elevation of its top changes from 30 to 45 degrees as the observer advances 10 ft. towards the base

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  1. Pawanyadav
    • one year ago
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    Let height be h Then distance from pole=h/tan30 =h√3. (Tan30=1/√3) Again Angle is 45 Than distance =h/tan45 =h. (Tan45=1) Now According to question h√3-h=10. Solve for h now.

  2. Pawanyadav
    • one year ago
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    Make diagram for more illustration Remember tanx=perpendicular/base So. Length of base=perpendicular/tanx

  3. anonymous
    • one year ago
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    why did you use \[\sqrt{3}\] ?

  4. anonymous
    • one year ago
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    @Pawanyadav

  5. Pawanyadav
    • one year ago
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    tan30. is what ?

  6. anonymous
    • one year ago
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    \[\sqrt{3}/3\]

  7. Pawanyadav
    • one year ago
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    We can write it 1/√3

  8. anonymous
    • one year ago
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    oh i see thank you :)

  9. Pawanyadav
    • one year ago
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    As 3=√3×√3 Canceling one √3 we get √3/3=1/√3

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