Radian Measure of a Central Angle

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Presentation transcript:

Radian Measure of a Central Angle r r

Radian Measure A second way to measure angles is in radians. Another way of measuring angles Convenient because major measurements of a circle (circumference, area, etc.) are involve pi Radians result in easier numbers to use

6.1 Radian and Degree Measure Radian Measure

6.1 Radian and Degree Measure Conversions Between Degrees and Radians To convert degrees to radians, multiply degrees by To convert radians to degrees, multiply radians by

Examples:

Ex 5. Convert the degrees to radian measure. 60 30 -54 -118 45

Ex 6. Convert the radians to degrees. a) b) c) d)

Class Work Convert from degrees to radians. 54 -300 Convert from radians to degrees. 3. 4.