A2Trig13­3to13­5Day2.notebook
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Algebra 2
Ch.13 Notes Page 56
P56 13­3 Radian Measure
13­4 The Sine Function (On WS)
13­5 The Cosine Function (On WS)
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13­3 Radian Measure
Central Angle: angle with a vertex at the center of a circle.
Intercepted Arc: the portion of the circle with endpoints on the sides of the central angle and other points within the interior of the angle. Radian: a central angle that intercepts an arc that has the same length as a radius of the circle.
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Find the radian measure of a 60 angle.
Find the degree measure of 3π radians.
3π
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Find the degree measure of 3π radians.
Find the radian measure of a 60 angle.
60 x π radians 180
3π radians x 180
π radians
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13­4 The Sine Function
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13­5 The Cosine Function
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HW #60
13­3 WS
13­4 WS
13­5 WS
Please put your name and class period at the top of the homework. Also include the homework number.
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A2Trig13­1to13­2Day2What Radian.ppt