Math Problem Statement

An aeroplane flies from city A at a bearing of 075° towards city B. What bearing does the aeroplane need to fly at to return from city B to city A?

Solution

The problem asks for the return bearing of an airplane. Bearings are measured clockwise from the north direction (0°). Here’s how we calculate the return bearing step-by-step:

Step 1: Analyze the forward bearing

  • The airplane flies from city A to city B on a bearing of 075075^\circ.

Step 2: Add 180180^\circ to reverse the direction

  • To find the return bearing (from city B back to city A), we add 180180^\circ to the forward bearing if the result is 360\leq 360^\circ. If it exceeds 360360^\circ, subtract 360360^\circ.

Calculation:

075+180=255075^\circ + 180^\circ = 255^\circ

The return bearing is 255°.


Would you like more details on bearings or have any other questions? 😊

Related Questions:

  1. What are bearings used for in navigation and geometry?
  2. How do you calculate a bearing when given two points on a map?
  3. What happens if the forward bearing is already greater than 180180^\circ?
  4. How do compass directions (e.g., N, S, E, W) relate to bearings?
  5. What tools can be used to measure bearings practically?

Tip:

When working with bearings, always remember they are measured clockwise from the north, and the angle is expressed in three digits for precision!

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Math Problem Analysis

Mathematical Concepts

Bearings
Angles
Directional Navigation

Formulas

Return Bearing = (Forward Bearing + 180°) % 360°

Theorems

Properties of Angles and Bearings

Suitable Grade Level

Grades 8-10