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91Ó°ÊÓ

Add or subtract as indicated. $$ \left(41^{\circ} 20^{\prime}\right)+\left(32^{\circ} 16^{\prime}\right) $$

Short Answer

Expert verified
The sum is \(73^{\circ} 36^{\prime}\).

Step by step solution

01

Understanding the Components

First, recognize that the expression involves adding two angles given in degrees and minutes. These are: \(41^{\circ} 20^{\prime}\) and \(32^{\circ} 16^{\prime}\).
02

Add the Degrees Separately

Add the degrees of the two angles first. That means adding \(41^{\circ}\) and \(32^{\circ}\):\[41^{\circ} + 32^{\circ} = 73^{\circ}\]
03

Add the Minutes Separately

Now, add the minutes from both angles: \(20^{\prime}\) and \(16^{\prime}\):\[20^{\prime} + 16^{\prime} = 36^{\prime}\]
04

Combine Degrees and Minutes

Combine the results from the previous steps to express the total angle:\[73^{\circ} 36^{\prime}\]
05

Check for Limits on Minutes

Since the result has the minutes \(36^{\prime}\) which is less than \(60^{\prime}\), no further adjustment is needed. The angle is already in its proper form.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Degrees and Minutes
Working with angles often involves understanding units like degrees and minutes. Degrees () are a common way to measure angles in geometry and trigonometry. Each degree is further divided into 60 parts called minutes (  ). This system is similar to the way we break down hours into minutes when telling time.

When you encounter problems involving degrees and minutes, it's important to treat each unit separately in calculations, much like you would handle hours and minutes. For example, when adding two angles like \(41^\circ 20^\prime\) and \(32^\circ 16^\prime\), you need to add both the degrees and the minutes individually. This separate approach helps in ensuring the calculations resemble those of a clock, maintaining precision in your results.

Remember:
  • Always break down angles into smaller units
  • Handle degrees and minutes separately in calculations
  • Minutes are always less than 60 in one degree
Trigonometric Angles
Angles are essential to understanding the fundamentals of trigonometry. They help us describe rotations, directions, and shapes in both practical and theoretical terms. When dealing with trigonometric angles, it's beneficial to be familiar with a couple of key characteristics.

Firstly, angles can be in different forms: degrees, radians, and gradients. For simplicity, degrees are commonly used, especially in educational settings.

In trigonometry, positive angles typically represent counterclockwise rotation while negative angles indicate clockwise. Additionally, adding angles together often involves handling trigonometric functions, but in simpler cases like this exercise, it simply involves arithmetic with degrees and minutes.

A helpful tip in trigonometry is to become comfortable with converting between different angular measures, though in this exercise we'll focus on degrees for simplicity.
Problem-Solving Steps
When faced with problems involving angles like the one in the exercise, having a structured approach can be tremendously helpful. Here are some key steps to consider:

  • Understand the Components: Break down the given angles into degrees and minutes. Recognize that you are dealing with separate units.
  • Add Degrees and Minutes Separately: Begin by adding the degrees, and then proceed to add the minutes. This ensures each unit is managed correctly.
  • Combine Results: Once you have calculated the total degrees and total minutes, combine them into one cohesive angle.
  • Check Minute Limits: After calculation, ensure that the minutes remain less than 60. If they exceed 60, convert excess minutes into degrees (60 minutes equal one degree) and add it to the total degrees.
  • Verify: Always double-check your work to ensure that all calculations are accurate and the final expression is correct.

These steps not only improve accuracy but also build confidence in handling similar exercises in the future. By following a consistent approach, students can master the art of solving problems involving angles efficiently.

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Most popular questions from this chapter

Each problem below refers to a vector \(\mathbf{V}\) with magnitude \(|\mathbf{V}|\) that forms an angle \(\theta\) with the positive \(x\)-axis. In each case, give the magnitudes of the horizontal and vertical vector components of \(\mathbf{V}\), namely \(\mathbf{V}_{x}\) and \(\mathbf{V}_{y}\), respectively. \(V \mid=17.6, \theta=67.2^{\circ}\)

Distance and Bearing Problems 17 through 22 involve directions in the form of bearing, which we defined in this section. Remember that bearing is always measured from a north-south line. A man wandering in the desert walks \(2.3\) miles in the direction \(\mathrm{S} \mathrm{} 31^{\circ} \mathrm{W}\). He then turns \(90^{\circ}\) and walks \(3.5\) miles in the direction \(\mathrm{N} \mathrm{} 59^{\circ} \mathrm{W}\). At that time, how far is he from his starting point, and what is his bearing from his starting point?

Refer to right triangle \(A B C\) with \(C=90^{\circ}\). Begin each problem by drawing a picture of the triangle with both the given and asked for information labeled appropriately. Also, write your answers for angles in decimal degrees.If \(c=5.678 \mathrm{ft}\) and \(a=4.567 \mathrm{ft}\), find \(A\)

To further justify the Cofunction Theorem, use your calculator to find a value for each pair of trigonometric functions below. In each case, the trigonometric functions are cofunctions of one another, and the angles are complementary angles. Round your answers to four places past the decimal point. $$ \sec 56.7^{\circ}, \csc 33.3^{\circ} $$

Use a calculator to find a value of \(\theta\) between \(0^{\circ}\) and \(90^{\circ}\) that satisfies each statement below. Write your answer in degrees and minutes rounded to the nearest minute. $$ \csc \theta=7.0683 $$

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