BELL RINGER 60 o 2 in. 4 in. Find the arc length and area of the sector of the circles: 1. 2. 3. What effect does doubling the radius have on the arc length.

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Presentation transcript:

BELL RINGER 60 o 2 in. 4 in. Find the arc length and area of the sector of the circles: What effect does doubling the radius have on the arc length and sector area?

RADIAN MEASURE MONDAY, DECEMBER 7, 2015

WHAT IS A RADIAN??? Discovering radians activity… You need: 1)A paper plate 2)Pipe Cleaner 3)Ruler and protractor 4)Scissors

NOTES

MORE EXAMPLES

PARTNER WORK Work with your learning partner to find the angles in degrees and radians.

UNIT CIRCLE Now that we can convert from degrees to radians, let’s fill in a Unit Circle with both.

HOMEWORK Think Radian Worksheet

EXIT TICKET 1) What is in the denominator when a 30 o angle (and those “like” it) is converted to radians? 2) What is in the denominator when a 45 o angle (and those “like” it) is converted to radians? 3) What is in the denominator when a 60 o angle (and those “like” it) is converted to radians?