The shadow of a telephone pole is 20 feet long. You measure the angle of elevation from the end of the shadow to the top of the
telephone pole to be 70 degrees. What is the height of the telephone pole? Round your answer to the nearest foot.
1 answer:
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Answer: OPTION C.
Step-by-step explanation:
Observe the triangle ABC attached.
Notice that the angle of depression is represented with .
Knowing that the top of a lighthouse is 260 feet above water and the ship is 270 feet offshore, you can find the value of by using arctangent:
In this case you can identify that:
Therefore, substuting values into , you get that the angle of depression is:
