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Accel Precalc Unit #5:Introduction to Trigonometry Lesson #2: Converting Angle Measures
EQ: How do you convert angle measures in radians to angle measure in degrees and vice-versa?
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Converting angle measures:
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Ex. Convert each angle measure. Reduce all fractions.
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Worksheet “ Angle Measure”
In Class Practice: [You will have time in class Thursday to work on this.] Worksheet “ Angle Measure”
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Calculator Conversions
Degrees, Minutes, Whole Seconds
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Ex. Convert degrees, minutes, seconds to decimal degrees and vice-versa.
50.106˚ 21˚15’22”
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Day 37 Agenda: DG minutes
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You studied this in the 10th grade course.
Arc length --- portion of a circle enclosed by 2 radii where θ is the radian measure of the central angle. s = rθ You studied this in the 10th grade course.
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*** angle already in radian measure
Ex. Find the arc length given a radius of 8 in and a central angle of . *** angle already in radian measure
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Ex. A circle has a radius of 4 inches
Ex. A circle has a radius of 4 inches. Find the length of the major arc and the minor arc. Major Arc : Minor Arc :
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ASSIGNMENT: textbook p. 292 – 293 #43 – 93 odd
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