Applied Math 40S Slides May 15, 2007
14
Periodic Functions Why are there 360° in a circle? What is the most "natural" way to measure angles? Photo Source: Circles
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Introduction to Periodic Functions. What is a radian? Converting degrees and radians. The meaning of "periodic." An introduction to the sine curve.
Transcript of Applied Math 40S Slides May 15, 2007
Periodic Functions
Why are there 360° in a circle?What is the most "natural" way to measure angles?
Photo Source: Circles
Area
Circumference
How do we convert between radians and degrees?
D is an angle in degreesR is an angle in radians
Find 30° in radians ... Find 20° in radians ...Examples:
Find 250° in radians ... Find in degrees ...
Find in degrees ...
Find -18° in radians ... Find in degrees ...
Find -18° in radians ... Find in degrees ...
What does periodic mean?
Baby heartbeat photo source
What does periodic mean?
Heartbeat of Trees photo source
The sine curve (graph) ...
