1. 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?

2. Converting angle measures:

3. Ex. Convert each angle measure. Reduce all fractions.

4. Worksheet “ Angle Measure”
In Class Practice: [You will have time in class Thursday to work on this.]
Worksheet “ Angle Measure”

6. Calculator Conversions
Degrees, Minutes, Whole Seconds

7. Ex. Convert degrees, minutes, seconds to decimal degrees and vice-versa.
50.106˚
21˚15’22”

8. Day 37 Agenda:
DG minutes

9. 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.

10. *** 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

11. 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 :

12. ASSIGNMENT:
textbook p. 292 – 293 #43 – 93 odd