lindsay57
contestada

As part of his math assignment, Santos has to estimate the height
of a lighthouse. He decides to use what he knows about 30-60-90
triangles. Santos makes the measurements shown below. About how
tall is the tower? Explain.
60
5ft
58 ft.
Not drawn to scale

As part of his math assignment Santos has to estimate the height of a lighthouse He decides to use what he knows about 306090 triangles Santos makes the measure class=

Respuesta :

coolstick

Answer:

105.46 feet

Step-by-step explanation:

We know all three angles (60, 90, and 30), as well as one side, which is adjacent to the 60 degrees. We want to find the side opposite to the 60 degree angle. To do this, we can use tangent, utilizing both opposite and adjacent.

Using tan, we can say that tan(60) = x/58, with x representing the height of the lighthouse (minus 5, because Santos is 5 feet tall and he is measuring the angle from the top of his head). Multiplying both sides by 58, we can get that 58 *tan(60) = x = 100.46. Add 5 to that to get 105.46 feet as your answer.

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