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Math Help - Word trigonoetry problem?

  1. #1
    Ash
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    Word trigonoetry problem?

    #1. A surveyor places pins at three corners of a property. The distance along one of the property is 80 feet, and the distance along the other side is 150 feet. Explain what measurement the surveyor can use to determine whether the two sides of the property are perpendicular.
    What should the measurement be?




    Could you use 80^2+ 150^2= c^2


    6400+22,500= 28,900 and the square root of 28,900 is 170
    So if the above information is correct, how do I use it to answer the question?



    #2. To signal the beginning of yacht race, a flare is shot into the air. The height h (in feet) of the flare after t seconds is given by h = 112t - 16t^2 .
    Determine the height of the flare after (a) 3.5 seconds and (b) 6 seconds.

    Is the answer for (a) 112(3.5) - 16(3.5)^ =196 feet?

    and for (b) 112(6)-16(6)^2 = 96 feet?
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  2. #2
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    Hello, Ash!

    1. A surveyor places pins at three corners of a property.
    The distance along one of the property is 80 feet, and the distance along the other side is 150 feet.
    Explain what measurement the surveyor can use to determine whether the two sides of the property are perpendicular.
    What should the measurement be?



    Could you use 80^2+ 150^2\:=\: c^2 . Yes!
     6400 + 22,500\:= \:28,900 and \sqrt{28,900} = 170
    So if the above information is correct, how do I use it to answer the question?
    Measure the distance from pin A to pin C and see if it is exactly 170 feet.


    2. To signal the beginning of yacht race, a flare is shot into the air.
    The height h (in feet) of the flare after t seconds is given by:  h \:= \:112t - 16t^2

    Determine the height of the flare after (a) 3.5 seconds and (b) 6 seconds.

    Is the answer for (a) 112(3.5) - 16(3.5)^2 \:=\:196 feet? . Right!

    and for (b) 112(6)-16(6)^2 \,= \,96 feet? . Correct!

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  3. #3
    Ash
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    Do you know a quick way to find the square root of a large number.
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  4. #4
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    Quote Originally Posted by Ash View Post
    Do you know a quick way to find the square root of a large number.
    Calculator.

    Or you could use google.

    sqrt(28900)
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  5. #5
    Ash
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    Quote Originally Posted by Soroban View Post
    Hello, Ash!

    Measure the distance from pin A to pin C and see if it is exactly 170 feet.
    So when they say explain what measurement the surveyor can use to determine whether the two sides of the property are perpendicular, the answer would be 80^2+ 150^2= 170?
    And also when they ask, "what should the measurements be?" Would the answer they want be 80 feet, 150 feet and 170 feet?
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