Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
1. Measuring Angles
Angles in Standard Position
2:55 minutes
Problem 9a
Textbook Question
Textbook QuestionConvert decimal degrees to degrees, minutes, seconds, and convert degrees, minutes, seconds to decimal degrees. If applicable, round to the nearest second or the nearest thousandth of a degree. 275.1005°
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Decimal Degrees
Decimal degrees are a way of expressing angles using a decimal format, where the whole number represents degrees and the decimal part represents a fraction of a degree. For example, 275.1005° indicates 275 degrees and a fraction of a degree, which can be converted into minutes and seconds for more precise measurements.
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Converting between Degrees & Radians
Degrees, Minutes, Seconds (DMS)
Degrees, minutes, and seconds is a traditional method of measuring angles, where one degree is divided into 60 minutes, and one minute is divided into 60 seconds. This format is often used in navigation and astronomy, allowing for a more granular representation of angles, especially when precision is required.
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Converting between Degrees & Radians
Conversion Between Formats
Converting between decimal degrees and degrees, minutes, seconds involves specific mathematical operations. To convert decimal degrees to DMS, the whole number is taken as degrees, while the decimal is multiplied by 60 to get minutes, and the decimal of the minutes is again multiplied by 60 to obtain seconds. Conversely, to convert DMS to decimal degrees, the seconds are divided by 3600, minutes by 60, and then summed with the degrees.
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