To find the height of a pole, a surveyor moves 120 feet away from the base of the pole and then, with a transit 8 feet tall, mea
sures the angle of elevation to the top of the pole to be 26. to the nearest foot, what is the height of the pole
1 answer:
Refer to the figure.
Let AB be the height of the pole; CD be the height of the transit; BC is the distance from the base of the pole to the transit.
Triangle ADE is a right triangle with angle D measuring 26 degrees. Using the tangent function, we have
So,
Therefore, the overall height of the pole is
The height of the pole is 66.53 feet.
Let AB be the height of the pole; CD be the height of the transit; BC is the distance from the base of the pole to the transit.
Triangle ADE is a right triangle with angle D measuring 26 degrees. Using the tangent function, we have
So,
Therefore, the overall height of the pole is
The height of the pole is 66.53 feet.
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We have only 5 workers left.
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<h3>Ratio = 5 workers / 10 workers = 1/2</h3>We see that the time is found by dividing the number of days in which the 10 workers finish the work, by 1/2.
As we know, dividing two fractions is the SAME as multiplying by the inverse fraction.
By so
<h3>5 workers finish this work in 60 days</h3>