6.4 Applications of Radians

Comic of the Day

Tip: Stay on target... stay on target!

Warm Up and Questions from the Homework
Convert as an exact value, and rounded to 2 decimal places.
a) 235° = _____ rad
b) π° = _____ rad
c) 6.00 rad = ____°
d) 9π/7 rad = ____°
What is the length of an arc that subtends an angle of 70°, at a radius of 7cm?

Announcements

• Next quiz Thu, Feb 28 (6.4 Radians and Arc Length)
• Next unit exam Mon, Mar 11 (55 minutes, in class)
• Summary of Studying (SOS) must be completed to write unit exam

Today - 6.4 Applications of Radians
Notes

Intermission - Should tau replace pi?
http://www.numberphile.com/videos/tau.html

Homework
6.4 #61-67

Tomorrow - 6.5 Unit Circle
Pre-read 6.5

For more information
https://www.khanacademy.org/math/trigonometry/basic-trigonometry/radians_tutorial/v/radian-measure-and-arc-length