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A clock that said 3 o'clock has moved its hands -2/3π radians. How many degrees did the hands of the clock moved?

Question

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Solution

1. Break Down the Problem

We need to convert the angle of rotation from radians to degrees. The hands of the clock originally point at 3 o'clock, and they have moved 23π-\frac{2}{3}\pi radians.

2. Relevant Concepts

To convert radians to degrees, we use the conversion factor: 1 radian=180π degrees 1 \text{ radian} = \frac{180}{\pi} \text{ degrees}

3. Analysis and Detail

We will convert the angle of 23π-\frac{2}{3}\pi radians to degrees using the formula mentioned above:

Degrees=Radians×180π \text{Degrees} = \text{Radians} \times \frac{180}{\pi}

Substituting the value:

Degrees=23π×180π \text{Degrees} = -\frac{2}{3}\pi \times \frac{180}{\pi}

4. Verify and Summarize

Calculating that:

Degrees=2×1803=3603=120 \text{Degrees} = -\frac{2 \times 180}{3} = -\frac{360}{3} = -120

This indicates that the hands of the clock moved 120-120 degrees.

Final Answer

The hands of the clock moved 120-120 degrees.

This problem has been solved

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