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 lenght from the bottom to the top of the pyramid the the nearest foot?

610 feet

781 feet

379 feet

296 feet

3 answers

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

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

In this case:

  • The angle \(\theta = 52^\circ\)
  • The height of the pyramid (opposite side) = 481 feet
  • The hypotenuse is the length we want to find.

Rearranging the sine equation to find the hypotenuse gives:

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

Plugging in the values:

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

Now we need to calculate \(\sin(52^\circ)\). Using a calculator:

\[ \sin(52^\circ) \approx 0.788 \]

Now, substitute this value into the equation:

\[ \text{hypotenuse} = \frac{481}{0.788} \approx 609.5 \]

Rounding this to the nearest foot, we have:

\[ \text{hypotenuse} \approx 610 \text{ feet} \]

Therefore, the correct answer is 610 feet.

u sure

Yes, let's go through the calculation step-by-step again to ensure accuracy.

  1. Identify the height and angle:

    • Height of the pyramid (opposite side) = 481 feet.
    • Angle \( \theta = 52^\circ \).
  2. Use the sine ratio: \[ \sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}} \]

    Rearranging for the hypotenuse gives us: \[ \text{hypotenuse} = \frac{\text{opposite}}{\sin(\theta)} \]

  3. Calculate \(\sin(52^\circ)\):

    • Using a calculator, we find: \[ \sin(52^\circ) \approx 0.788 \]
  4. Substituting values: \[ \text{hypotenuse} = \frac{481}{0.788} \approx 609.5 \]

  5. Round to the nearest foot:

    • Rounding 609.5 gives us 610 feet.

Thus, the length from the bottom to the top of the pyramid is indeed 610 feet.

If you have any more questions or need further clarification, feel free to ask!