The parametric equations and parameter interval for the motion of a particle in the xy-plane are given below. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion. 5n y = sin 0sts5 X= cos The Cartesian equation for the particle is

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**Title: Parametric Equations in the xy-plane**

**Introduction:**

Learn how to derive a Cartesian equation from parametric equations and understand the path of a particle in the xy-plane through a given parameter interval.

**Problem Statement:**

The parametric equations and parameter interval for the motion of a particle in the xy-plane are given below. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.

\[ x = \cos \left( \frac{5\pi}{4} - t \right), \quad y = \sin \left( \frac{5\pi}{4} - t \right), \quad 0 \leq t \leq \frac{\pi}{2} \]

**Step-by-Step Solution:**

1. **Express the Parametric Equations:**
   Provide the equations describing x and y in terms of t:
   \[ x = \cos \left( \frac{5\pi}{4} - t \right) \]
   \[ y = \sin \left( \frac{5\pi}{4} - t \right) \]

2. **Graphing the Cartesian Equation:**
   To graph the Cartesian equation, we need to eliminate the parameter t. Applying trigonometric identities can help transform the parametric equations to a single Cartesian equation.

3. **Convert to Cartesian Form:**
   \[ x = \cos \left( \frac{5\pi}{4} - t \right) \]
   Using the trigonometric identity \(\cos (A - B) = \cos A \cos B + \sin A \sin B\):
   \[ x = \cos \frac{5\pi}{4} \cos t + \sin \frac{5\pi}{4} \sin t \]

   Similarly for y:
   \[ y = \sin \left( \frac{5\pi}{4} - t \right) \]
   Using the identity \(\sin (A - B) = \sin A \cos B - \cos A \sin B\):
   \[ y = \sin \frac{5\pi}{4} \cos t - \cos \frac{5\pi}{4} \sin t \]

4. **Simplify:**
Transcribed Image Text:**Title: Parametric Equations in the xy-plane** **Introduction:** Learn how to derive a Cartesian equation from parametric equations and understand the path of a particle in the xy-plane through a given parameter interval. **Problem Statement:** The parametric equations and parameter interval for the motion of a particle in the xy-plane are given below. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion. \[ x = \cos \left( \frac{5\pi}{4} - t \right), \quad y = \sin \left( \frac{5\pi}{4} - t \right), \quad 0 \leq t \leq \frac{\pi}{2} \] **Step-by-Step Solution:** 1. **Express the Parametric Equations:** Provide the equations describing x and y in terms of t: \[ x = \cos \left( \frac{5\pi}{4} - t \right) \] \[ y = \sin \left( \frac{5\pi}{4} - t \right) \] 2. **Graphing the Cartesian Equation:** To graph the Cartesian equation, we need to eliminate the parameter t. Applying trigonometric identities can help transform the parametric equations to a single Cartesian equation. 3. **Convert to Cartesian Form:** \[ x = \cos \left( \frac{5\pi}{4} - t \right) \] Using the trigonometric identity \(\cos (A - B) = \cos A \cos B + \sin A \sin B\): \[ x = \cos \frac{5\pi}{4} \cos t + \sin \frac{5\pi}{4} \sin t \] Similarly for y: \[ y = \sin \left( \frac{5\pi}{4} - t \right) \] Using the identity \(\sin (A - B) = \sin A \cos B - \cos A \sin B\): \[ y = \sin \frac{5\pi}{4} \cos t - \cos \frac{5\pi}{4} \sin t \] 4. **Simplify:**
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