Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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Please answer only part (a) of the attached question

### Vector Geometry Problem

Consider the cuboid shown in the figure. The lengths of the edges [KL], [LM], and [LX] are 8 units, 5 units, and 3 units, respectively. Point P is identified as the midpoint of the edge [KL]. Using vector methods, determine the measure of the following angles:

#### Given:
- KL = 8 units
- LM = 5 units
- LX = 3 units
- P is the midpoint of KL.

#### Questions:
a. Measure of angle \( \angle YNX \)

b. Measure of angle \( \angle YNP \)

### Diagram Description:
The diagram shows a cuboid labeled with vertices W, X, Y, Z, K, L, M, and N. 

- K, L, P, and M are in the lower base with K and L on the horizontal axis. 
- W, X, Y, and Z are vertices on the upper base. 
- K and W, L and M, and X and Z are vertically aligned. 
- P is marked as the midpoint of the line segment KL. A dotted diagonal line connects L and W as well as the line segments of the upper base, forming additional rectangular faces.

This setup helps in visualizing the layout of the cuboid and provides a clear reference for solving the angles in question. Applying vector methods involves using the coordinates of points or applying vector rules for angle determination.

---

Note: When working on such problems, you may use vectors' properties including dot products, unit vectors, and basic trigonometric identities to find angles in a 3-dimensional structure.
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Transcribed Image Text:### Vector Geometry Problem Consider the cuboid shown in the figure. The lengths of the edges [KL], [LM], and [LX] are 8 units, 5 units, and 3 units, respectively. Point P is identified as the midpoint of the edge [KL]. Using vector methods, determine the measure of the following angles: #### Given: - KL = 8 units - LM = 5 units - LX = 3 units - P is the midpoint of KL. #### Questions: a. Measure of angle \( \angle YNX \) b. Measure of angle \( \angle YNP \) ### Diagram Description: The diagram shows a cuboid labeled with vertices W, X, Y, Z, K, L, M, and N. - K, L, P, and M are in the lower base with K and L on the horizontal axis. - W, X, Y, and Z are vertices on the upper base. - K and W, L and M, and X and Z are vertically aligned. - P is marked as the midpoint of the line segment KL. A dotted diagonal line connects L and W as well as the line segments of the upper base, forming additional rectangular faces. This setup helps in visualizing the layout of the cuboid and provides a clear reference for solving the angles in question. Applying vector methods involves using the coordinates of points or applying vector rules for angle determination. --- Note: When working on such problems, you may use vectors' properties including dot products, unit vectors, and basic trigonometric identities to find angles in a 3-dimensional structure.
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