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4.1 PowerPoint PPT Presentation

4.1. Radian and Degree Measure. Quick Review. Quick Review Solutions. What you’ll learn about. The Problem of Angular Measure How to use Degree and Radian measure Circular Arc Length Angular and Linear Motion … and why Angles are the domain elements of the trigonometric functions.

4.1

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4.1

Quick Review Solutions

• The Problem of Angular Measure

• How to use Degree and Radian measure

• Circular Arc Length

• Angular and Linear Motion

… and why

Angles are the domain elements of the trigonometric functions.

Why 360º?

A central angle of a circle has measure 1 radian if it intercepts an arc with the same length as the radius.

How many radians are in 60 degrees?

How many radians are in 60 degrees?

Angular and Linear Motion

• Angular speed is measured in units like revolutions per minute.

• Linear speed is measured in units like miles per hour.

Nautical Mile

A nautical mile (naut mi) is the length of 1 minute of arc along Earth’s equator.