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13-3 Radian Measure. Today’s Objective: I can measure an angle in radians. Measure of an angle Amount of rotation from initial side to terminal side of an angle. y. Radians: . (0, 1). distance along edge of unit circle. Degrees. 1 radian = 1 radius along circle. 1 rotation = . 360°.
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13-3Radian Measure Today’s Objective: I can measure an angle in radians
Measure of an angle Amount of rotation from initial side to terminal side of an angle y Radians: (0, 1) • distance along edge of unit circle Degrees 1 radian = 1 radius along circle 1 rotation = 360° circumference 1 rotation = r Conversion Factors Degrees → Radians Radians → Degrees 1 radian r x (-1, 0) (1, 0) (0, -1)
Radians on Unit Circle y (0, 1) or x • Degrees Radians (-1, 0) (1, 0) • Radians Degrees (0, -1)
Find the exact value of trigonometric function. y (0, 1) x (1, 0) (-1, 0) (0, -1) Pg. 848 #6-25, 37-44