66 and GH =e10 units, In circle H with MLGHJ find the iength of arc GJ. Rond to the hearest hundreath. to

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Chapter6: Equations
Section6.1: Solving Trigonometric Equations
Problem 94PS
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**Problem Statement:**
In circle H with ∠GHJ = 66° and GH = 10 units, find the length of arc GJ. Round to the nearest hundredth.

**Diagram:**
The diagram is a circle labeled with points G, H, and J. H is at the center of the circle. The points G and J are on the circumference of the circle. There is a central angle ∠GHJ which measures 66°. The line segment GH is the radius of the circle and is 10 units long.

**Solution Explanation:**
To find the length of arc GJ:

1. **Formula for Arc Length**: 
   The arc length (s) of a circle can be calculated using the formula:
   \[
   s = r \theta
   \]
   where \(r\) is the radius and \(\theta\) is the angle in radians.

2. **Convert Degrees to Radians**:
   Convert the given angle from degrees to radians since the formula requires radians:
   \[
   \theta \text{ (in radians)} = \theta \text{ (in degrees)} \times \frac{\pi}{180}
   \]
   \(\theta\) = 66° × \(\frac{\pi}{180}\)

3. **Calculate in Radians**:
   \[
   \theta = 66 \times \frac{\pi}{180} = \frac{11\pi}{30} \text{ radians}
   \]

4. **Calculate Arc Length**:
   \[
   s = r \times \theta = 10 \times \frac{11\pi}{30}
   \]

5. **Compute the Exact Value**:
   \[
   s = \frac{110\pi}{30} \approx 11.52 \text{ units} 
   \]

**Thus, the length of arc GJ, rounded to the nearest hundredth, is approximately 11.52 units.**
Transcribed Image Text:**Problem Statement:** In circle H with ∠GHJ = 66° and GH = 10 units, find the length of arc GJ. Round to the nearest hundredth. **Diagram:** The diagram is a circle labeled with points G, H, and J. H is at the center of the circle. The points G and J are on the circumference of the circle. There is a central angle ∠GHJ which measures 66°. The line segment GH is the radius of the circle and is 10 units long. **Solution Explanation:** To find the length of arc GJ: 1. **Formula for Arc Length**: The arc length (s) of a circle can be calculated using the formula: \[ s = r \theta \] where \(r\) is the radius and \(\theta\) is the angle in radians. 2. **Convert Degrees to Radians**: Convert the given angle from degrees to radians since the formula requires radians: \[ \theta \text{ (in radians)} = \theta \text{ (in degrees)} \times \frac{\pi}{180} \] \(\theta\) = 66° × \(\frac{\pi}{180}\) 3. **Calculate in Radians**: \[ \theta = 66 \times \frac{\pi}{180} = \frac{11\pi}{30} \text{ radians} \] 4. **Calculate Arc Length**: \[ s = r \times \theta = 10 \times \frac{11\pi}{30} \] 5. **Compute the Exact Value**: \[ s = \frac{110\pi}{30} \approx 11.52 \text{ units} \] **Thus, the length of arc GJ, rounded to the nearest hundredth, is approximately 11.52 units.**
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