5 п 6 e graph below shows the angle A = A = 5π/6 Find the exact value (no rounding) of tangent. 5п tan 6 Type here to search + inside the unit circle. II C E

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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### Understanding Angle \( A = \frac{5\pi}{6} \) on the Unit Circle

#### Diagram Explanation
The diagram illustrates an angle \( A = \frac{5\pi}{6} \) within a unit circle. The unit circle is centered at the origin of a coordinate plane, with a radius of 1 unit.

Key features of the diagram include:
- The angle \( A \) is indicated inside the unit circle with a curved line.
- The angle spans from the positive x-axis to a line intersecting the unit circle in the second quadrant.
- Perpendicular (right-angle) indicators are present, dividing a triangle inside the unit circle.

#### Numerical Analysis
1. **Find the exact value (no rounding) of the tangent of the angle.**

\[ \tan\left(\frac{5\pi}{6}\right) = \]

This field invites the learner to input the exact tangent value of \( \frac{5\pi}{6} \).

##### Explanation of Calculations:
- **Tangent Calculation:**
  The tangent of an angle in the unit circle is the ratio of the y-coordinate to the x-coordinate of the point where the terminal side of the angle intersects the circle.
  
  For \( \frac{5\pi}{6} \) which is in the second quadrant:
  
  \[
  \tan\left(\frac{5\pi}{6}\right) = \tan\left(\pi - \frac{\pi}{6}\right) = -\tan\left(\frac{\pi}{6}\right)
  \]
  
  Knowing that \(\tan\left(\frac{\pi}{6}\right) = \frac{1}{\sqrt{3}} \) or \( \frac{\sqrt{3}}{3} \):
  
  \[
  \tan\left(\frac{5\pi}{6}\right) = -\frac{\sqrt{3}}{3}
  \]

By understanding these concepts through both visual and analytical perspectives, we gain a robust comprehension of trigonometric functions within the unit circle's context.
Transcribed Image Text:### Understanding Angle \( A = \frac{5\pi}{6} \) on the Unit Circle #### Diagram Explanation The diagram illustrates an angle \( A = \frac{5\pi}{6} \) within a unit circle. The unit circle is centered at the origin of a coordinate plane, with a radius of 1 unit. Key features of the diagram include: - The angle \( A \) is indicated inside the unit circle with a curved line. - The angle spans from the positive x-axis to a line intersecting the unit circle in the second quadrant. - Perpendicular (right-angle) indicators are present, dividing a triangle inside the unit circle. #### Numerical Analysis 1. **Find the exact value (no rounding) of the tangent of the angle.** \[ \tan\left(\frac{5\pi}{6}\right) = \] This field invites the learner to input the exact tangent value of \( \frac{5\pi}{6} \). ##### Explanation of Calculations: - **Tangent Calculation:** The tangent of an angle in the unit circle is the ratio of the y-coordinate to the x-coordinate of the point where the terminal side of the angle intersects the circle. For \( \frac{5\pi}{6} \) which is in the second quadrant: \[ \tan\left(\frac{5\pi}{6}\right) = \tan\left(\pi - \frac{\pi}{6}\right) = -\tan\left(\frac{\pi}{6}\right) \] Knowing that \(\tan\left(\frac{\pi}{6}\right) = \frac{1}{\sqrt{3}} \) or \( \frac{\sqrt{3}}{3} \): \[ \tan\left(\frac{5\pi}{6}\right) = -\frac{\sqrt{3}}{3} \] By understanding these concepts through both visual and analytical perspectives, we gain a robust comprehension of trigonometric functions within the unit circle's context.
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