A (4х- 4)° (x+44)° B х-52

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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Find the measure of each angle
### Triangle Angle Calculation

The diagram depicts a triangle labeled as ABC. The angles at each vertex are given as follows:

- Angle at vertex A is \((4x - 4)^\circ\)
- Angle at vertex B is \((x - 44)^\circ\)
- Angle at vertex C is \(\left(\frac{1}{2} x - 52\right)^\circ\)

#### Explanation of the Diagram
- Vertex A has the angle \((4x - 4)^\circ\), which is indicated near the vertex with a proper labeled angle arc.
- Vertex B has the angle \((x - 44)^\circ\), similarly indicated near the vertex with an angle arc.
- Vertex C has the angle \(\left(\frac{1}{2} x - 52\right)^\circ\).

### Objective
The angles within the triangle sum up to \(180^\circ\). Thus, to find the value of \(x\):

1. **Write the equation representing the sum of the angles:**

\[
(4x - 4) + (x - 44) + \left(\frac{1}{2} x - 52\right) = 180
\]

2. **Combine like terms:**

\[
4x - 4 + x - 44 + \frac{1}{2} x - 52 = 180
\]

3. **Combine the \(x\) terms:**

\[
4x + x + \frac{1}{2} x = 5.5x
\]

4. **Combine the constant terms:**
   
\[
-4 - 44 - 52 = -100
\]

So the equation becomes:

\[
5.5x - 100 = 180
\]

5. **Solve for \(x\):**
   
\[
5.5x = 280
\]

\[
x = \frac{280}{5.5}
\]

\[
x \approx 50.91
\]

Thus, substituting \(x\) back into the original angles will give the exact measurements of the angles at vertices A, B, and C.

### Checking
To ensure accuracy, substitute \(x\) back into each angle expression to verify their sum is \(180^\circ\).
- Angle A: \(4(50.91) - 4
Transcribed Image Text:### Triangle Angle Calculation The diagram depicts a triangle labeled as ABC. The angles at each vertex are given as follows: - Angle at vertex A is \((4x - 4)^\circ\) - Angle at vertex B is \((x - 44)^\circ\) - Angle at vertex C is \(\left(\frac{1}{2} x - 52\right)^\circ\) #### Explanation of the Diagram - Vertex A has the angle \((4x - 4)^\circ\), which is indicated near the vertex with a proper labeled angle arc. - Vertex B has the angle \((x - 44)^\circ\), similarly indicated near the vertex with an angle arc. - Vertex C has the angle \(\left(\frac{1}{2} x - 52\right)^\circ\). ### Objective The angles within the triangle sum up to \(180^\circ\). Thus, to find the value of \(x\): 1. **Write the equation representing the sum of the angles:** \[ (4x - 4) + (x - 44) + \left(\frac{1}{2} x - 52\right) = 180 \] 2. **Combine like terms:** \[ 4x - 4 + x - 44 + \frac{1}{2} x - 52 = 180 \] 3. **Combine the \(x\) terms:** \[ 4x + x + \frac{1}{2} x = 5.5x \] 4. **Combine the constant terms:** \[ -4 - 44 - 52 = -100 \] So the equation becomes: \[ 5.5x - 100 = 180 \] 5. **Solve for \(x\):** \[ 5.5x = 280 \] \[ x = \frac{280}{5.5} \] \[ x \approx 50.91 \] Thus, substituting \(x\) back into the original angles will give the exact measurements of the angles at vertices A, B, and C. ### Checking To ensure accuracy, substitute \(x\) back into each angle expression to verify their sum is \(180^\circ\). - Angle A: \(4(50.91) - 4
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