The original height of the Great Pyramid of Giza was 481 feet. The side of the pyramid rose at an angle of approximately 52°. Which of the following correctly uses the sine ratio to find the length from the bottom to the top of the pyramid to the nearest foot? 481 feet (1 point) 379 feet 781 feet 296 feet 610 feet

1 answer

To find the length from the bottom to the top of the Great Pyramid of Giza using the sine ratio, we can use the formula for sine:

\[ \sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}} \]

Where:

  • \(\theta\) is the angle of 52°
  • The opposite side is the original height of the pyramid, which is 481 feet
  • The hypotenuse is what we want to find (the length from the bottom to the top of the pyramid).

Rearranging the sine formula to solve for the hypotenuse gives us:

\[ \text{hypotenuse} = \frac{\text{opposite}}{\sin(\theta)} \]

Substituting the values:

\[ \text{hypotenuse} = \frac{481}{\sin(52^\circ)} \]

Using a calculator to find \(\sin(52^\circ)\):

\(\sin(52^\circ) \approx 0.7880\)

Now, substituting this value back into the formula:

\[ \text{hypotenuse} \approx \frac{481}{0.7880} \approx 609.3 \]

Rounding to the nearest foot gives us approximately 610 feet.

Thus, the correct answer is 610 feet.